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Exception during run: The FileSyncProvider received an unexpected error while writing a change

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I have been happily running SyncToy 1.4 for over a year syncing my laptop to my server. It has worked well.

I don't know why I decided to upgrade to 2.0, but I did! I carefully did a full sync before I installed.

When I ran for the first time, I was surprised that it found a large number of files it wanted to sync. When I ran the sync, it failed with "Exception during run: The FileSyncProvider received an unexpected error while writing a change"

I've tried deleting and recreating the folder pair, but all to no avail. I'm going back to 1.4 until this is explained or fixed.

Any Ideas

Saturday, August 16, 2008 1:37 PM

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IT WORKS!

A friend at work suggested I try reformatting my external hard drive (Western Digital) and see if that helps, this solved some back up issues that he was having but with some different software.

First thing I noticed was the WD drive was configured as FAT32 which I thought was odd since it is a 1 TB drive. I reformatted overnight (this time to NTFS) and just finished recreating the folder pair that consistently failed to complete and not only did it run to completion but it ran about twice as fast as it did prior to the reformat.

Another folder pair with 4000 files has been running while I was writting this and it just completed as well.

Reformatting may not be the solution for everyone but it looks like it solved my problem.

Dave

Friday, January 9, 2009 1:22 PM
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Hi Dave -

That is good news ! While we have done minimal testing on FAT32 - I am not surprised that it fails sometimes with large data sets. I assumed you were formatted as NTFS - 1 TB disks usually are and I checked on the disk I got and it had NTFS as well.

Thanks

Deepa

Saturday, January 10, 2009 12:03 AM

All replies

Nigel J. Terry wrote:

I have been happily running SyncToy 1.4 for over a year syncing my laptop to my server. It has worked well.

I don't know why I decided to upgrade to 2.0, but I did! I carefully did a full sync before I installed.

When I ran for the first time, I was surprised that it found a large number of files it wanted to sync. When I ran the sync, it failed with "Exception during run: The FileSyncProvider received an unexpected error while writing a change"

I've tried deleting and recreating the folder pair, but all to no avail. I'm going back to 1.4 until this is explained or fixed.

Any Ideas

Same error here. My echo will run for an arbitrary amount of time, and will fail with this error. Twenty-five or six hundred files might be echoed, with no obvious reason for the error.

The files are being copied to a mapped drive pointing to a share on a network storage device.

Proposed as answer by vdjtvj Saturday, November 7, 2009 7:58 PM

Sunday, August 17, 2008 3:33 AM

Hi Nigel/Louis, sorry to hear about the error you're getting. Can I ask a couple of clarifying questions? Which build of SyncToy are you running - is the Beta build or the one released just a couple days back? You can check the build version from the SyncToy Help Menu - About SyncToy option. Also, can you let us which kind of network storage devices you're running against?

Sunday, August 17, 2008 5:18 PM

Answerer

I was running the latest release version which I downloaded yesterday. I can't check the version as I uninstalled it to go back to 1.4 (which works fine again)

My server is running Fedora8 with access to the share via Samba

Nigel

Sunday, August 17, 2008 5:51 PM

Hi Ashish,

Thank you very much for the reply. I have the same problems and here are the information you requested

SyncToy 2.0
Version 2.0.100.0
Built 8/12/2008 2:07:12pm

I downloaded the x64 version and running on Vista x64 Home Premium. I used to have SyncToy v1.4 and the 2.0 Beta installed but they are uninstalled (at least I couldn't find those in Add/Remove in the Control Panel).

My network storage is Windows XP Home. The network share is not mapped and done via UNC (e.g. //servername/sharename...) I think I tried with a mapped drive but same error.

Thanks again

PS. I want to add that the files/directories that I can trying to sync are big. About 30+ GB in total with very deep directory trees and some of of the files/directories have non-ASCII file names (multi-lang such as Chinese, Japanese, etc...). Not sure if these matter (I was suspecting some limit to the level of directories or error in handling unicode filenames. Only guesses)

Sunday, August 17, 2008 7:46 PM

Ashish Shah [MSFT] wrote:

I was running the latest build released a few days ago. The storage device I'm using is the D-Link DNS-343 with four Western Digital Caviar GP 1TB drives in a RAID 5 array. The device is attached via gigabit ethernet to a wireless access point, and I'm connecting wirelessly via a network share. For what it's worth, I'm experiencing packet loss while transferring the files. I would expect to see latency rather than packet loss if the network was suffering from slowness due to the high volume of data transfer, so to me it seems related to a weak wireless connection -- although there are no other symptoms of a weak connection.

Sunday, August 17, 2008 10:11 PM

Louis, we're just using regular Win32 APIs over SMB to copy the files over. It is possible that your SMB implementation on the other side is not dealing with the packet loss very well. Can you try doing an xcopy of the same files over the same network links to see if you run into errors? Also, can you post any errors / exception information you see in the SyncToy log after you hit this error with SyncToy? You can view the log from the SyncToy File menu.

Monday, August 18, 2008 7:43 PM

Answerer

GerroLive, one question for you. Does this error fail the whole sync operation, or you're getting this on certain files only and the rest of the files are synchronizing fine? SyncToy does not support file paths longer than 256 characters currently. We do support non-English characters in file names though.

Monday, August 18, 2008 7:45 PM

Answerer

Nigel, we haven't had a chance to test Synctoy 2.0 much against SAMBA shares. However, the file copy part of the logic hasn't changed between SyncToy 2.0 Beta and RTM so I'm not sure why this would happen with the latest build and not with the Beta. The error you're getting, does this fail the whole sync or just some files?

Monday, August 18, 2008 7:47 PM

Answerer

Ashish Shah [MSFT] wrote:

Frankly, I think the problem is with the storage device not handling the packet loss well. I believe the DNS-343 runs Linux and Samba (though not certain). Another similar utility is experiencing problems as well, and reporting that the file being written to is no longer available. It, however, offers an unattended retry option that does not halt execution of the operation on such errors -- maybe a thought for a future version?

I've since uninstalled SyncToy, so I no longer have access to logs.

Monday, August 18, 2008 7:52 PM

I had the same thing happen today. I am using Windows Home Server with Service Pack 1 installed and Windows XP Home Premium with Service Pack 3 installed. (SyncToy 2.0) In my case, I synced the photo folder on the WHS and XP. It ran fine and synced 800 or so files out of about 10,000. I got the same error message when I came home. Apparently the process stopped at the point of the error message. When I ran the sync again after rebooting, I still had several hundreds of files to sync. In my case, after the error, I could no longer access my server. I rebooted and reran the synctoy. Several hundred files had to be reprocessed.

I have noticed this behavior using WHS before; Service Pack 1 did nothing to fix it. When copying several large files sometimes the server will disconnect and have to be rebooted.

Tuesday, August 19, 2008 1:30 AM

I have to check but I am 90% positive that the path is really long. It always seems to fail on the same spot too (guess, same file), and the whole sync operation fail (ie, no file is synced at all). Interestingly enough, the preview is ok but not the actual execution. Guess the preview doesn't invoke the same operations which have the 256 char limit.

Is this something easily fixable or hard limiation in some APIs? Thanks again for looking into this.

Tuesday, August 19, 2008 8:04 AM

1.4 ran great for me too. I upgraded to 2.0Beta as soon as it came out. Everytime I run any sort of sync, I got at least once and only once the error 'Exception:Value does not fall within the expected range'. The sync worked just fine and the error was alwyas on a random folder, never the same one twice. Now I have upgraded to 2.0 GA and that error has turned into 'Exception during run: The FileSyncProvider received an unexpected error while writing a change'. I am syncing from my hard drive to an external USB hard drive. I have Vista 32-bit. If I select one folder pair or all of them, it will always happen once. I click OK and it finishes the sync with no problems. I use SyncToy at work on my Vista system there and have no issues. It is very frustrating since it has been going on since the beta came out 10 months ago and now the GA version does the same thing. My syncs can take several minutes and I have to watch it the entire time so I can click OK to the error message so it will finish.

Tuesday, August 19, 2008 4:04 PM

Hi Eric -

I am sorry to hear that you are running into an issue. To further debug the issue it would be great if you could -

1) Close SyncToy.

2) Open up the file SyncToy.config located in the same directory as where you installed SyncToy.exe - you can change an option there for the SyncToyTraceLevel from "Info" to "Verbose".

3) Reopen SyncToy and perform the same operations that hit the issue above.

4) If you then Can you take a look at your log ( can be accessed using File->ViewLog) and see if there is more information logged there?.

Thanks

Deepa

Tuesday, August 19, 2008 10:09 PM

My problem was not caused by moving from 2.0 Beta to 2.0 Release, but when I moved from 1.4 to 2.0

Nigel

Tuesday, August 19, 2008 10:12 PM

Hi Eric,

I turned on verbose and here is the log. Any help would be much appreciated. Thanks.

SYNC: 08/20/2008 01:11:03:650: -------------------------------------------------------------------------
SYNC: 08/20/2008 01:11:03:686: Starting SyncToy, version 2.0.100.0, built 12/08/2008 2:07:12 PM.
SYNC: 08/20/2008 01:15:00:612: Started scanning directory : \\BACKY\Backup\
SYNC: 08/20/2008 01:15:00:614: Started scanning directory : D:\Backup\
SYNC: 08/20/2008 01:15:09:668: Stopped scanning directory : D:\Backup\
SYNC: 08/20/2008 01:15:33:612: Stopped scanning directory : \\BACKY\Backup\
SYNC: 08/20/2008 01:16:44:196: Preview of Sync with Backy (D:\Backup\, \\BACKY\Backup\) in time 00:01:43:578.
SyncToy action was 'Synchronize'
Found 1604 actions to perform.
Found 13,329 files that did not require action.
Analyzed 128.7 files per second.
Avoided copying 65,204,324,256 bytes in 13,329 files.
Saved approximately 12:13:28:00 by not copying any files.

SYNC: 08/20/2008 01:17:04:019: *** Exception during run: {0} :
Microsoft.Synchronization.SyncException: The FileSyncProvider received an unexpected error while writing a change. ---> System.Runtime.InteropServices.COMException (0x80070040): The FileSyncProvider received an unexpected error while writing a change.
   at Microsoft.Synchronization.CoreInterop.ISyncSession.Start(CONFLICT_RESOLUTION_POLICY resolutionPolicy, _SYNC_SESSION_STATISTICS& pSyncSessionStatistics)
   at Microsoft.Synchronization.KnowledgeSyncOrchestrator.DoOneWaySyncHelper(SyncIdFormatGroup sourceIdFormats, SyncIdFormatGroup destinationIdFormats, KnowledgeSyncProviderConfiguration destinationConfiguration, SyncCallbacks DestinationCallbacks, ISyncProvider sourceProxy, ISyncProvider destinationProxy, Int32& changesApplied, Int32& changesFailed)
   --- End of inner exception stack trace ---
   at Microsoft.Synchronization.KnowledgeSyncOrchestrator.DoOneWaySyncHelper(SyncIdFormatGroup sourceIdFormats, SyncIdFormatGroup destinationIdFormats, KnowledgeSyncProviderConfiguration destinationConfiguration, SyncCallbacks DestinationCallbacks, ISyncProvider sourceProxy, ISyncProvider destinationProxy, Int32& changesApplied, Int32& changesFailed)
   at Microsoft.Synchronization.KnowledgeSyncOrchestrator.DoOneWayKnowledgeSync(SyncProvider sourceProvider, SyncProvider destinationProvider, Int32& changesApplied, Int32& changesFailed)
   at Microsoft.Synchronization.KnowledgeSyncOrchestrator.Synchronize()
   at Microsoft.Synchronization.SyncOrchestrator.Synchronize()
   at SyncToy.SyncEngine.CreateAndStartSession(FileSyncProvider destinationProvider, FileSyncProvider sourceProvider)
   at SyncToy.SyncEngine.RunSyncSessionsForChosenSyncType(FileSyncProvider leftProvider, FileSyncProvider rightProvider, SyncMode syncMode)
   at SyncToy.SyncEngine.Run(Boolean previewMode)
   at SyncToy.SyncEngine.Sync()
   at SyncToyUI.PreviewDialog.RunOnePair(SyncEngine syncEngine)
SYNC: 08/20/2008 01:17:04:020: *** Exception during run: The FileSyncProvider received an unexpected error while writing a change.

Wednesday, August 20, 2008 8:19 AM

Here is the error from the log.

Avoided copying 2,073,058 bytes in 8 files.
Saved approximately 00:00:04:00 by not copying any files.

SYNC: 08/20/2008 18:26:20:990: *** Exception during run: {0} :
System.ArgumentException: The FileSyncProvider received an unexpected error while applying a synchronized change.
   at Microsoft.Synchronization.CoreInterop.ISyncSession.Start(CONFLICT_RESOLUTION_POLICY resolutionPolicy, _SYNC_SESSION_STATISTICS& pSyncSessionStatistics)
   at Microsoft.Synchronization.KnowledgeSyncOrchestrator.DoOneWaySyncHelper(SyncIdFormatGroup sourceIdFormats, SyncIdFormatGroup destinationIdFormats, KnowledgeSyncProviderConfiguration destinationConfiguration, SyncCallbacks DestinationCallbacks, ISyncProvider sourceProxy, ISyncProvider destinationProxy, Int32& changesApplied, Int32& changesFailed)
   at Microsoft.Synchronization.KnowledgeSyncOrchestrator.DoOneWayKnowledgeSync(SyncProvider sourceProvider, SyncProvider destinationProvider, Int32& changesApplied, Int32& changesFailed)
   at Microsoft.Synchronization.KnowledgeSyncOrchestrator.Synchronize()
   at Microsoft.Synchronization.SyncOrchestrator.Synchronize()
   at SyncToy.SyncEngine.CreateAndStartSession(FileSyncProvider destinationProvider, FileSyncProvider sourceProvider)
   at SyncToy.SyncEngine.RunSyncSessionsForChosenSyncType(FileSyncProvider leftProvider, FileSyncProvider rightProvider, SyncMode syncMode)
   at SyncToy.SyncEngine.Run(Boolean previewMode)
   at SyncToy.SyncEngine.Sync()
   at SyncToyUI.PreviewDialog.RunOnePair(SyncEngine syncEngine)
SYNC: 08/20/2008 18:26:20:991: *** Exception during run: The FileSyncProvider received an unexpected error while applying a synchronized change.
SYNC: 08/20/2008 18:26:36:062: SyncToy run of Download (C:\Download\, G:\Home\Download\) completed at 8/20/2008 6:26:36 PM.
SyncToy action was 'Echo'.
SyncToy options were:
Active for run all
All files included
No files excluded
Do not check file contents
Include read-only files
Include hidden files
Include system files
Do not backup older files
All subfolders included
SyncToy run took 00:00:00:273.
Copied 0 bytes in 0 files in 00:00:00:273.
Bytes per second 0.0, files per second 0.0.
Avoided copying 3,330,692,784 bytes in 869 files that did not require action.
Saved approximately 01:51:01:00 by not copying all files.

Wednesday, August 20, 2008 11:30 PM

Hi -

The error code 0x80070040 maps to "The specified network name is no longer available". It looks like you have a network resource that goes offline periodically. When this happens we are not sure if this is a sporadic event or if trying to sync a subsequent file will succeed so we decide to abort the sync.

I am sorry I do not have a workaround for you for this problem. When you restart the sync - we will start from where we left off but there is no way for us to keep retrying this.

Thanks

Deepa

Thursday, August 21, 2008 12:58 AM

Hi Eric -

I am aware that your problem does not appear to be a network issue - we are continuing to investigate this issue.

Thanks

Deepa

Thursday, August 21, 2008 1:00 AM

Deepa

What that doesn't explain however is why 1.4 worked so well for so long without any problems and yet 2.0 fails regularily. Why can't you make it work like 1.4?

Nigel

Thursday, August 21, 2008 1:02 AM

Hi Deepa,

Is it possible to have an option in the config file to have the system retry a few more times? Or is there already such option already? I understand it is not possible to encounter for these scenario but the option may be useful for less than ideal networks?

Thanks.

Friday, August 22, 2008 5:38 PM

Sorry there is no way to specify in the config to retry or a retry-count. We will look into seeing if we can do this for the future.

Thanks

Deepa

Friday, August 22, 2008 9:20 PM

Hello,

Same problem with version 2 (32). XP PRO SP 3 (with FR language pack).

SyncToy action was 'Synchronize'
Found 4439 actions to perform.
Found 1.400 files that did not require action.
Analyzed 88,3 files per second.
Avoided copying 116.246.988 bytes in 1.400 files.
Saved approximately 00:03:52:00 by not copying any files.

SYNC: 08/23/2008 11:49:01:921: *** Exception during run: {0} :
System.IO.FileNotFoundException: The FileSyncProvider received an unexpected error while applying a synchronized change.
   à Microsoft.Synchronization.CoreInterop.ISyncSession.Start(CONFLICT_RESOLUTION_POLICY resolutionPolicy, _SYNC_SESSION_STATISTICS& pSyncSessionStatistics)
   à Microsoft.Synchronization.KnowledgeSyncOrchestrator.DoOneWaySyncHelper(SyncIdFormatGroup sourceIdFormats, SyncIdFormatGroup destinationIdFormats, KnowledgeSyncProviderConfiguration destinationConfiguration, SyncCallbacks DestinationCallbacks, ISyncProvider sourceProxy, ISyncProvider destinationProxy, Int32& changesApplied, Int32& changesFailed)
   à Microsoft.Synchronization.KnowledgeSyncOrchestrator.DoOneWayKnowledgeSync(SyncProvider sourceProvider, SyncProvider destinationProvider, Int32& changesApplied, Int32& changesFailed)
   à Microsoft.Synchronization.KnowledgeSyncOrchestrator.Synchronize()
   à Microsoft.Synchronization.SyncOrchestrator.Synchronize()
   à SyncToy.SyncEngine.CreateAndStartSession(FileSyncProvider destinationProvider, FileSyncProvider sourceProvider)
   à SyncToy.SyncEngine.RunSyncSessionsForChosenSyncType(FileSyncProvider leftProvider, FileSyncProvider rightProvider, SyncMode syncMode)
   à SyncToy.SyncEngine.Run(Boolean previewMode)
   à SyncToy.SyncEngine.Sync()
   à SyncToyUI.PreviewDialog.RunOnePair(SyncEngine syncEngine)
SYNC: 08/23/2008 11:49:01:921: *** Exception during run: The FileSyncProvider received an unexpected error while applying a synchronized change.

Saturday, August 23, 2008 9:58 AM

About the same issue over here.
In fact there seem to be two issues.
1 Exception during run: The FileSyncProvider received an unexpected error while writing a change.
2 Exception during run: The FileSyncProvider received an unexpected error while applying a synchronized change.

The first one shows appearently an error code in Verbose, the latter (which I suffer from) does not.

I managed overcoming it by copying (duplicating) directories. But that's really a hassle.

Monday, August 25, 2008 4:14 PM

Forgot to mention that I ran SyncToy after copy/pasting the problematic source folder without a problem.

allard

Monday, August 25, 2008 4:40 PM

I am also experiencing this same issue with SyncToy 2.0. I had used SyncToy 1.4 for over a year, but was frustrated because 1.4 did not remove deleted folders in Synchronize so I'd end up with numerous empty folders which required additional steps to remove.

I upgraded to 2.0 beta which worked beautifully for a while, then after about six months of using Vista (2 desktops backing up to a USB 2.0 SATA drive) the performance of SyncToy 2.0 Beta slowed to a crawl. After much research online, I "downgraded" to 1.4 which worked fine until a couple of weeks ago.

This time performance on 1.4 was terrible (again on Vista SP1). Upon learning of that the "final version" of SyncToy 2.0 had been released, I upgraded, and have since been having the issue being discussed with errors during transfer.

I have noticed that a normal copy/paste in Vista performs equally poorly, and sometimes gives the "The specified network name is no longer available" message upon failing. I'm not talking large files here...a couple of minutes ago a 200KB PPTX file took two minutes to transfer.

I know my network is performing well. A ping test returns < 1ms response between machines. I suspicion at this point that my problem is Vista-related and not necessarily SyncToy-related. The performance issues showed up shortly after August's Patch Tuesday. Coincidence??? Hmmm...

Monday, August 25, 2008 11:19 PM

I finally got around to doing more testing. I have ten folder pairs. I never get the exception error if I do only one folder pair. It has to be on the All Folder Pair screen. I narrowed it down to where it only happens when I select my 'Pictures' folder pair and at least one other folder pair. If that is the only one selected and I do Run All, it will run without error. If I select it and at least one other folder pair or all, I get the message. The stange thing is, the error always stops on another folder pair. The error seems to occur just before it is about to process/synchronize the 'Picture' folder pair. A preview will not produce the error but if I run a preview and the 'Picture' folder was selected and then I choose the synchronize the preview, I get the error as soon as I press 'Run'. My Pictures folder pair goes no more than about four sub-folders down with no more than 50 characters for a full path name. I am going to do more investigating as to what other oddities there are to hopefully get rid of the error message.

Tuesday, August 26, 2008 3:49 PM

I finally resolved my issue. Through trial and error I narrowed the error down to two sub folders in my Pictures sync pair. If I excluded those two, the sync ran without errors. The two source folders have about 15 100kb jpegs in them. I looked on the target side in those two folders and found the jpeg files followed with _SyncToyBackup_timeanddate. ex: sunset.jpg_SyncToyBackup_20070410123240906. Since they were dated April of last year, I knew SyncToy 1.4 must have created those. I deleted everything on those two folders on the target side and reran the sync but still got the error. I then manually copied the jpegs to the target side and re-ran the sync with no errors. I even created new files in those sub-folders to make sure they would get backed up and now the sync runs fine every time. If anyone else sees this issue, try searching your target for *synctoybackup* and go from there. Hope this helps.

Wednesday, September 3, 2008 5:24 PM

I'm using Vista Business with Synctoy 2.0 and am receiving this error after uninstalling, reinstalling, etc on a WD Passport USB HDD. I can't seem to make it run at all. I've tried with one subdirectory with 6 files in and no luck. Very frustrating. Does anyone have some other solutions?

Friday, September 19, 2008 3:38 AM

Try physically looking in the folder that is your "right side"(your WD Passport) of the folder pair and delete any files that may be in that sub-directory and try the sync again. If that does not work, manually copy the six files over to the USB HDD into the folder that is your "right side" and then try the sync again.

Friday, September 19, 2008 3:22 PM

Deepa, I see this error while synchronizing with SharePoint site. I'm pretty sure that the network connection is good. The sharepoint is mounted using standard Windows WebDAV client, and it is able to perform preview without any problem.

If I install another WebDAV client (than the standard Windows), the synchronization is running. I can see some retries in the client monitoring window. Unfortunately this is no option for me, as the client is crippling paths with spaces and national characters.

What is interesting is that there's no problem to use standard Windows Explorer (or 3rd party file managers like Servant Salamander) to interact with the mounted sharepoint site. The only software which has some issues is SyncToys.

Martin

Sunday, September 21, 2008 11:51 PM

I recently upgraded to SyncToy 2.0 from 1.4 and have been running into the same problems. I'm syncing with a Sharepoint site and it worked great under 1.4. Now I keep getting an "Exception during run: The FileSyncProvider received an unexpected error while applying a synchronized change". It halts when it runs into the problem and I have been removing the offending files from the directory which allows the sync to crawl through a few more files before getting hung up somewhere else. None of these files are very unusual, they're all .docs or .pdf files and are anywhere between 100KB to 300KB. I'm on a gigabit network and don't suffer any latency/disconnects. I do have a Groove File Share on the same directory but again none of this was a problem under 1.4 (which you can no longer download it seems).

Tuesday, September 23, 2008 3:52 PM

Here are the log details from running the verbose mode:

SYNC: 09/23/2008 10:57:07:606: Started scanning directory : C:\Documents and Settings\bcampbel\My Documents\CMS Project\
SYNC: 09/23/2008 10:57:07:616: Scanning Directory : C:\Documents and Settings\bcampbel\My Documents\CMS Project
SYNC: 09/23/2008 10:57:07:616: Scanning Directory : C:\Documents and Settings\bcampbel\My Documents\CMS Project\01-Requirements
SYNC: 09/23/2008 10:57:07:626: Scanning Directory : C:\Documents and Settings\bcampbel\My Documents\CMS Project\02-Analysis - Design
SYNC: 09/23/2008 10:57:07:626: Scanning Directory : C:\Documents and Settings\bcampbel\My Documents\CMS Project\03-Implementation
SYNC: 09/23/2008 10:57:07:626: Scanning Directory : C:\Documents and Settings\bcampbel\My Documents\CMS Project\03-Implementation\Operations
SYNC: 09/23/2008 10:57:07:626: Scanning Directory : C:\Documents and Settings\bcampbel\My Documents\CMS Project\04-Testing
SYNC: 09/23/2008 10:57:07:626: Scanning Directory : C:\Documents and Settings\bcampbel\My Documents\CMS Project\05-Project Management
SYNC: 09/23/2008 10:57:07:626: Scanning Directory : C:\Documents and Settings\bcampbel\My Documents\CMS Project\05-Project Management\business case
SYNC: 09/23/2008 10:57:07:626: Scanning Directory : C:\Documents and Settings\bcampbel\My Documents\CMS Project\05-Project Management\Images
SYNC: 09/23/2008 10:57:07:626: Scanning Directory : C:\Documents and Settings\bcampbel\My Documents\CMS Project\05-Project Management\Project Plan
SYNC: 09/23/2008 10:57:07:626: Scanning Directory : C:\Documents and Settings\bcampbel\My Documents\CMS Project\05-Project Management\RFP
SYNC: 09/23/2008 10:57:07:636: Scanning Directory : C:\Documents and Settings\bcampbel\My Documents\CMS Project\05-Project Management\sprints
SYNC: 09/23/2008 10:57:07:636: Scanning Directory : C:\Documents and Settings\bcampbel\My Documents\CMS Project\05-Project Management\status reports
SYNC: 09/23/2008 10:57:07:636: Scanning Directory : C:\Documents and Settings\bcampbel\My Documents\CMS Project\05-Project Management\Templates
SYNC: 09/23/2008 10:57:07:636: Scanning Directory : C:\Documents and Settings\bcampbel\My Documents\CMS Project\05-Project Management\Tools
SYNC: 09/23/2008 10:57:07:796: Scanning Complete : 46 Files Found, 14 Directories Found, 15517079 Total File Size
SYNC: 09/23/2008 10:57:07:796: Stopped scanning directory : C:\Documents and Settings\bcampbel\My Documents\CMS Project\
SYNC: 09/23/2008 10:57:07:796: Started scanning directory : \\Sharepoint.bmc.com\cmsstrategy\
SYNC: 09/23/2008 10:57:07:816: Scanning Directory : \\Sharepoint.bmc.com\cmsstrategy
SYNC: 09/23/2008 10:57:07:826: Scanning Directory : \\Sharepoint.bmc.com\cmsstrategy\images
SYNC: 09/23/2008 10:57:07:846: Scanning Directory : \\Sharepoint.bmc.com\cmsstrategy\Application Integration
SYNC: 09/23/2008 10:57:07:856: Scanning Directory : \\Sharepoint.bmc.com\cmsstrategy\Application Integration\WWW Sources
SYNC: 09/23/2008 10:57:07:866: Scanning Directory : \\Sharepoint.bmc.com\cmsstrategy\Application Integration\Forms
SYNC: 09/23/2008 10:57:07:886: Scanning Directory : \\Sharepoint.bmc.com\cmsstrategy\01-Requirements
SYNC: 09/23/2008 10:57:07:886: Scanning Directory : \\Sharepoint.bmc.com\cmsstrategy\status reports
SYNC: 09/23/2008 10:57:07:907: Scanning Directory : \\Sharepoint.bmc.com\cmsstrategy\status reports\Forms
SYNC: 09/23/2008 10:57:07:927: Scanning Directory : \\Sharepoint.bmc.com\cmsstrategy\02-Analysis - Design
SYNC: 09/23/2008 10:57:07:937: Scanning Directory : \\Sharepoint.bmc.com\cmsstrategy\Lists
SYNC: 09/23/2008 10:57:07:947: Scanning Directory : \\Sharepoint.bmc.com\cmsstrategy\Lists\WWWASP Project Issue List
SYNC: 09/23/2008 10:57:07:957: Scanning Directory : \\Sharepoint.bmc.com\cmsstrategy\Lists\WWWASP Project Issue List\Attachments
SYNC: 09/23/2008 10:57:07:967: Scanning Directory : \\Sharepoint.bmc.com\cmsstrategy\Lists\Tasks
SYNC: 09/23/2008 10:57:07:977: Scanning Directory : \\Sharepoint.bmc.com\cmsstrategy\Lists\Tasks\Attachments
SYNC: 09/23/2008 10:57:07:987: Scanning Directory : \\Sharepoint.bmc.com\cmsstrategy\Lists\Events
SYNC: 09/23/2008 10:57:07:997: Scanning Directory : \\Sharepoint.bmc.com\cmsstrategy\Lists\Events\Attachments
SYNC: 09/23/2008 10:57:08:007: Scanning Directory : \\Sharepoint.bmc.com\cmsstrategy\Lists\Project Risk List
SYNC: 09/23/2008 10:57:08:027: Scanning Directory : \\Sharepoint.bmc.com\cmsstrategy\Lists\Project Risk List\Attachments
SYNC: 09/23/2008 10:57:08:037: Scanning Directory : \\Sharepoint.bmc.com\cmsstrategy\Lists\General Discussion
SYNC: 09/23/2008 10:57:08:047: Scanning Directory : \\Sharepoint.bmc.com\cmsstrategy\Lists\General Discussion\Attachments
SYNC: 09/23/2008 10:57:08:057: Scanning Directory : \\Sharepoint.bmc.com\cmsstrategy\Lists\Contacts
SYNC: 09/23/2008 10:57:08:067: Scanning Directory : \\Sharepoint.bmc.com\cmsstrategy\Lists\Contacts\Attachments
SYNC: 09/23/2008 10:57:08:077: Scanning Directory : \\Sharepoint.bmc.com\cmsstrategy\Lists\Links
SYNC: 09/23/2008 10:57:08:087: Scanning Directory : \\Sharepoint.bmc.com\cmsstrategy\Lists\Announcements
SYNC: 09/23/2008 10:57:08:097: Scanning Directory : \\Sharepoint.bmc.com\cmsstrategy\Lists\Announcements\Attachments
SYNC: 09/23/2008 10:57:08:107: Scanning Directory : \\Sharepoint.bmc.com\cmsstrategy\css
SYNC: 09/23/2008 10:57:08:127: Scanning Directory : \\Sharepoint.bmc.com\cmsstrategy\CMS PROJECT
SYNC: 09/23/2008 10:57:08:137: Scanning Directory : \\Sharepoint.bmc.com\cmsstrategy\CMS PROJECT\05-Project Management
SYNC: 09/23/2008 10:57:08:147: Scanning Directory : \\Sharepoint.bmc.com\cmsstrategy\CMS PROJECT\05-Project Management\Tools
SYNC: 09/23/2008 10:57:08:157: Scanning Directory : \\Sharepoint.bmc.com\cmsstrategy\CMS PROJECT\05-Project Management\status reports
SYNC: 09/23/2008 10:57:08:187: Scanning Directory : \\Sharepoint.bmc.com\cmsstrategy\CMS PROJECT\05-Project Management\Project Plan
SYNC: 09/23/2008 10:57:08:207: Scanning Directory : \\Sharepoint.bmc.com\cmsstrategy\CMS PROJECT\05-Project Management\Images
SYNC: 09/23/2008 10:57:08:237: Scanning Directory : \\Sharepoint.bmc.com\cmsstrategy\CMS PROJECT\05-Project Management\taskMatrix
SYNC: 09/23/2008 10:57:08:257: Scanning Directory : \\Sharepoint.bmc.com\cmsstrategy\CMS PROJECT\05-Project Management\sprints
SYNC: 09/23/2008 10:57:08:267: Scanning Directory : \\Sharepoint.bmc.com\cmsstrategy\CMS PROJECT\05-Project Management\RFP
SYNC: 09/23/2008 10:57:08:287: Scanning Directory : \\Sharepoint.bmc.com\cmsstrategy\CMS PROJECT\05-Project Management\Templates
SYNC: 09/23/2008 10:57:08:307: Scanning Directory : \\Sharepoint.bmc.com\cmsstrategy\CMS PROJECT\05-Project Management\business case
SYNC: 09/23/2008 10:57:08:367: Scanning Directory : \\Sharepoint.bmc.com\cmsstrategy\CMS PROJECT\04-Testing
SYNC: 09/23/2008 10:57:08:407: Scanning Directory : \\Sharepoint.bmc.com\cmsstrategy\CMS PROJECT\Forms
SYNC: 09/23/2008 10:57:08:447: Scanning Directory : \\Sharepoint.bmc.com\cmsstrategy\CMS PROJECT\02-Analysis-Design
SYNC: 09/23/2008 10:57:08:457: Scanning Directory : \\Sharepoint.bmc.com\cmsstrategy\CMS PROJECT\03-Implementation
SYNC: 09/23/2008 10:57:08:467: Scanning Directory : \\Sharepoint.bmc.com\cmsstrategy\CMS PROJECT\03-Implementation\API_SDK
SYNC: 09/23/2008 10:57:08:477: Scanning Directory : \\Sharepoint.bmc.com\cmsstrategy\CMS PROJECT\03-Implementation\API_SDK\sdk
SYNC: 09/23/2008 10:57:08:487: Scanning Directory : \\Sharepoint.bmc.com\cmsstrategy\CMS PROJECT\03-Implementation\API_SDK\sdk\dependencies
SYNC: 09/23/2008 10:57:08:537: Scanning Directory : \\Sharepoint.bmc.com\cmsstrategy\CMS PROJECT\03-Implementation\API_SDK\sdk\javadoc
SYNC: 09/23/2008 10:57:08:557: Scanning Directory : \\Sharepoint.bmc.com\cmsstrategy\CMS PROJECT\03-Implementation\API_SDK\sdk\javadoc\index-files
SYNC: 09/23/2008 10:57:08:598: Scanning Directory : \\Sharepoint.bmc.com\cmsstrategy\CMS PROJECT\03-Implementation\API_SDK\sdk\javadoc\com
SYNC: 09/23/2008 10:57:08:648: Scanning Directory : \\Sharepoint.bmc.com\cmsstrategy\CMS PROJECT\03-Implementation\API_SDK\sdk\javadoc\com\clickability
SYNC: 09/23/2008 10:57:08:678: Scanning Directory : \\Sharepoint.bmc.com\cmsstrategy\CMS PROJECT\03-Implementation\API_SDK\sdk\javadoc\com\clickability\cmpublish
SYNC: 09/23/2008 10:57:08:698: Scanning Directory : \\Sharepoint.bmc.com\cmsstrategy\CMS PROJECT\03-Implementation\API_SDK\sdk\javadoc\com\clickability\cmpublish\api
SYNC: 09/23/2008 10:57:08:748: Scanning Directory : \\Sharepoint.bmc.com\cmsstrategy\CMS PROJECT\03-Implementation\API_SDK\sdk\javadoc\com\clickability\cmpublish\api\v1
SYNC: 09/23/2008 10:57:08:778: Scanning Directory : \\Sharepoint.bmc.com\cmsstrategy\CMS PROJECT\03-Implementation\API_SDK\sdk\javadoc\com\clickability\cmpublish\api\v1\sdk
SYNC: 09/23/2008 10:57:08:848: Scanning Directory : \\Sharepoint.bmc.com\cmsstrategy\CMS PROJECT\03-Implementation\API_SDK\sdk\javadoc\com\clickability\cmpublish\api\v1\sdk\class-use
SYNC: 09/23/2008 10:57:08:898: Scanning Directory : \\Sharepoint.bmc.com\cmsstrategy\CMS PROJECT\03-Implementation\API_SDK\sdk\javadoc\resources
SYNC: 09/23/2008 10:57:08:938: Scanning Directory : \\Sharepoint.bmc.com\cmsstrategy\CMS PROJECT\03-Implementation\API_SDK\sdk\2008-06-02
SYNC: 09/23/2008 10:57:08:948: Scanning Directory : \\Sharepoint.bmc.com\cmsstrategy\CMS PROJECT\03-Implementation\Operations
SYNC: 09/23/2008 10:57:08:958: Scanning Directory : \\Sharepoint.bmc.com\cmsstrategy\CMS PROJECT\01_Requirements
SYNC: 09/23/2008 10:57:08:978: Scanning Directory : \\Sharepoint.bmc.com\cmsstrategy\05-Project Management
SYNC: 09/23/2008 10:57:08:988: Scanning Directory : \\Sharepoint.bmc.com\cmsstrategy\05-Project Management\Images
SYNC: 09/23/2008 10:57:09:048: Scanning Directory : \\Sharepoint.bmc.com\cmsstrategy\03-Implementation
SYNC: 09/23/2008 10:57:09:258: Scanning Complete : 277 Files Found, 59 Directories Found, 28617964 Total File Size
SYNC: 09/23/2008 10:57:09:268: Stopped scanning directory : \\Sharepoint.bmc.com\cmsstrategy\
SYNC: 09/23/2008 10:57:10:450: Preview of WWW-ASP (C:\Documents and Settings\bcampbel\My Documents\CMS Project\, \\Sharepoint.bmc.com\cmsstrategy\) in time 00:00:02:844.
SyncToy action was 'Synchronize'
Found 386 actions to perform.
Found 0 files that did not require action.

SYNC: 09/23/2008 10:57:10:691: *** Exception during run: {0} :
System.ArgumentException: The FileSyncProvider received an unexpected error while applying a synchronized change.
   at Microsoft.Synchronization.CoreInterop.ISyncSession.Start(CONFLICT_RESOLUTION_POLICY resolutionPolicy, _SYNC_SESSION_STATISTICS& pSyncSessionStatistics)
   at Microsoft.Synchronization.KnowledgeSyncOrchestrator.DoOneWaySyncHelper(SyncIdFormatGroup sourceIdFormats, SyncIdFormatGroup destinationIdFormats, KnowledgeSyncProviderConfiguration destinationConfiguration, SyncCallbacks DestinationCallbacks, ISyncProvider sourceProxy, ISyncProvider destinationProxy, Int32& changesApplied, Int32& changesFailed)
   at Microsoft.Synchronization.KnowledgeSyncOrchestrator.DoOneWayKnowledgeSync(SyncProvider sourceProvider, SyncProvider destinationProvider, Int32& changesApplied, Int32& changesFailed)
   at Microsoft.Synchronization.KnowledgeSyncOrchestrator.Synchronize()
   at Microsoft.Synchronization.SyncOrchestrator.Synchronize()
   at SyncToy.SyncEngine.CreateAndStartSession(FileSyncProvider destinationProvider, FileSyncProvider sourceProvider)
   at SyncToy.SyncEngine.RunSyncSessionsForChosenSyncType(FileSyncProvider leftProvider, FileSyncProvider rightProvider, SyncMode syncMode)
   at SyncToy.SyncEngine.Run(Boolean previewMode)
   at SyncToy.SyncEngine.Sync()
   at SyncToyUI.PreviewDialog.RunOnePair(SyncEngine syncEngine)
SYNC: 09/23/2008 10:57:10:691: *** Exception during run: The FileSyncProvider received an unexpected error while applying a synchronized change.

Tuesday, September 23, 2008 3:58 PM

As a quick update. I uninstalled SyncToy 2.0 and installed 1.4. The sync now works without any problem.

Tuesday, September 23, 2008 4:29 PM

I am also getting this error and have tried some of the other suggestions in this string and still can't solve the problem. From the number of views on this post I think there are many others having the problem. Do you have a new version yet?

SYNC: 09/25/2008 09:33:54:718: *** Exception during run: {0} :
System.ArgumentException: The FileSyncProvider received an unexpected error while applying a synchronized change.
   at Microsoft.Synchronization.CoreInterop.ISyncSession.Start(CONFLICT_RESOLUTION_POLICY resolutionPolicy, _SYNC_SESSION_STATISTICS& pSyncSessionStatistics)
   at Microsoft.Synchronization.KnowledgeSyncOrchestrator.DoOneWaySyncHelper(SyncIdFormatGroup sourceIdFormats, SyncIdFormatGroup destinationIdFormats, KnowledgeSyncProviderConfiguration destinationConfiguration, SyncCallbacks DestinationCallbacks, ISyncProvider sourceProxy, ISyncProvider destinationProxy, Int32& changesApplied, Int32& changesFailed)
   at Microsoft.Synchronization.KnowledgeSyncOrchestrator.DoOneWayKnowledgeSync(SyncProvider sourceProvider, SyncProvider destinationProvider, Int32& changesApplied, Int32& changesFailed)
   at Microsoft.Synchronization.KnowledgeSyncOrchestrator.Synchronize()
   at Microsoft.Synchronization.SyncOrchestrator.Synchronize()
   at SyncToy.SyncEngine.CreateAndStartSession(FileSyncProvider destinationProvider, FileSyncProvider sourceProvider)
   at SyncToy.SyncEngine.RunSyncSessionsForChosenSyncType(FileSyncProvider leftProvider, FileSyncProvider rightProvider, SyncMode syncMode)
   at SyncToy.SyncEngine.Run(Boolean previewMode)
   at SyncToy.SyncEngine.Sync()
   at SyncToyUI.PreviewDialog.RunOnePair(SyncEngine syncEngine)
SYNC: 09/25/2008 09:33:54:718: *** Exception during run: The FileSyncProvider received an unexpected error while applying a synchronized change.

Thursday, September 25, 2008 6:12 PM

I experienced this error, too.

Client side;

Windows Vista SP1

SyncToy 2.0.100.0 (Built 8/12/2008 2:07:12 PM)

Transferring to Networked-Mapped Drives

on a Windows Home Server (with PP1)

I was sync'ing my 6 WHS shares-

* Music

* Photos

* Public

* Software

* Users

* Videos

-- and the error occured in the middle of Software. It had gotten thru the first half fine........

Wednesday, October 1, 2008 5:43 PM

I'm getting the error while trying to sync to an external USB hard drive under Windows XP.

Saturday, October 4, 2008 3:08 AM

We are looking into the problem - but we have been unable to repro it internally in our labs yet. We will get back with a fix when we can identify what the issue.

Thanks

Deepa

Tuesday, October 7, 2008 6:45 PM

We are still working on trying to repro the problem - anyone has any other information on changes that they made to the filesystem ( like moving/renaming folder, etc) anything that was not a straightforward update of a file perhaps. Or files with unusual names - unusual lengths?

Thanks

Deepa

Wednesday, October 8, 2008 2:10 AM

I have recently downloaded 2.0 and never had 1.4 installed on my system. I am getting the same error and one similarity I see between myself and other fellow users running into this issue is the fact we are trying to sync with documents on a SharePoint site.

I have tried using the full path to the folder on the SharePoint server but I have also tried syncing using a mapped directory leading straight to the "paired" folder I am trying to sync and still get the same exception error.

I tried some of the work arounds like copying the files manually before syncing and that works as long as I don't change anything in the files I want to sync afterwards (which defeats the purpose of synching). I made sure to make only a minor change (changing the border of a cell in an excel document in the paired folder) and then save the file as normal before synching and get the same error.

This is very frustrating and I would like for you to please make version 1.4 available for all the users that are currently stuck with a non-working 2.0.

Code Snippet

SYNC: 10/09/2008 09:34:29:784: *** Exception during run: {0} :
System.ArgumentException: The FileSyncProvider received an unexpected error while applying a synchronized change.
   at Microsoft.Synchronization.CoreInterop.ISyncSession.Start(CONFLICT_RESOLUTION_POLICY resolutionPolicy, _SYNC_SESSION_STATISTICS& pSyncSessionStatistics)
   at Microsoft.Synchronization.KnowledgeSyncOrchestrator.DoOneWaySyncHelper(SyncIdFormatGroup sourceIdFormats, SyncIdFormatGroup destinationIdFormats, KnowledgeSyncProviderConfiguration destinationConfiguration, SyncCallbacks DestinationCallbacks, ISyncProvider sourceProxy, ISyncProvider destinationProxy, Int32& changesApplied, Int32& changesFailed)
   at Microsoft.Synchronization.KnowledgeSyncOrchestrator.DoOneWayKnowledgeSync(SyncProvider sourceProvider, SyncProvider destinationProvider, Int32& changesApplied, Int32& changesFailed)
   at Microsoft.Synchronization.KnowledgeSyncOrchestrator.Synchronize()
   at Microsoft.Synchronization.SyncOrchestrator.Synchronize()
   at SyncToy.SyncEngine.CreateAndStartSession(FileSyncProvider destinationProvider, FileSyncProvider sourceProvider)
   at SyncToy.SyncEngine.RunSyncSessionsForChosenSyncType(FileSyncProvider leftProvider, FileSyncProvider rightProvider, SyncMode syncMode)
   at SyncToy.SyncEngine.Run(Boolean previewMode)
   at SyncToy.SyncEngine.Sync()
   at SyncToyUI.PreviewDialog.RunOnePair(SyncEngine syncEngine)
SYNC: 10/09/2008 09:34:29:784: *** Exception during run: The FileSyncProvider received an unexpected error while applying a synchronized change.
SYNC: 10/09/2008 09:43:47:299: -------------------------------------------------------------------------
SYNC: 10/09/2008 09:43:47:299: Starting SyncToy, version 2.0.100.0, built 8/12/2008 2:07:12 PM.

Thursday, October 9, 2008 1:45 PM

Deepa Choundappan - MSFT wrote:

Thanks

Deepa

Hello, Deepa.

Count me among those with this problem. In my case, I am synchronizing a number of virtual machines and physical machines. The error occurs randomly when running the sync from any XP Pro source machine, VM or physical, to a single Vista physical machine.There are times that the sync proceeds perfectly and others when the sync fails repeatedly with the exception. Typically, restarting the sync allows it to either proceed to a point where it fails again after writing a different change or it proceeds to completion. Typically, it happens at least once per sync and there does not appear to be any rhyme or reason to the error's appearance. The error stops the sync from proceeding, but I don't get any orphans or bad files out of the sync. If I watch the process closely, it appears to write the file to the destination and then fails when moving on to the next file.

Note that my settings for the pair in all cases is to Sync, but the changes are really heading in one direction only. The files on the Vista machine are never altered except via the SyncToy action. The source files are changes by the machine initiating the Sync or another machine "upstream" in the chain. Typically, all changes occur on a single physical machine. That machine then runs a Sync to 3 VMs and and then any one of the VMs will then Sync the changes to the Vista physical machine. Another common scenario is that the changes occur on a single VM guest on the physical Vista machine and then I run SyncToy to copy those changes to the Vista folders. As noted, the error appears randomly from any of the 3 VMs (only one "lives" on the Vista physical box) and only when changes are being written to the Vista machine.

I deleted the folder pairs, removed all traces of the SyncToy markers from the Vista folders and recreated the pairs and still see the errors randomly.

-steve

Tuesday, October 14, 2008 12:59 PM

Deepa, how much more information can you need? I think you have dozens of test cases and scenarios that you can execute against in this thread alone and it looks like there are plenty more like it on this board. Judging by the technical knowledge that the community members demonstrate in their posts, I can't imagine this is as simple as 'don't use the "-" symbol in your file directory names". Why don't you email one of the posters and have them share a desktop with you so you can see the problem directly. This is giving a black eye to Microsoft.

Tuesday, October 14, 2008 1:24 PM

I have just installed SyncToy 2.0 on my Windows XP SP3 laptop - having never before used SyncToy.

I get this error whenever I

Map a SharePoint to a drive letter
Create a folder pair using this drive letter as the source
Create or modify a file on the local folder
Synchronize

I get no errors if I create or modify files on the SharePoint and synchronise them.

I get no errors if I use an ordinary share rather than a SharePoint.

I enabled verbose logging and this is the output I got.

SYNC: 10/17/2008 15:10:18:903: Started scanning directory : Q:\Shared Documents\
SYNC: 10/17/2008 15:10:18:923: Scanning Directory : Q:\Shared Documents
SYNC: 10/17/2008 15:10:19:083: Scanning Directory : Q:\Shared Documents\Test DD
SYNC: 10/17/2008 15:10:19:253: Scanning Directory : Q:\Shared Documents\2008-10 Test Folder
SYNC: 10/17/2008 15:10:19:333: Started scanning directory : Y:\Test Data\
SYNC: 10/17/2008 15:10:19:353: Scanning Directory : Y:\Test Data
SYNC: 10/17/2008 15:10:19:353: Scanning Directory : Y:\Test Data\2008-10 Test Folder
SYNC: 10/17/2008 15:10:19:373: Scanning Directory : Y:\Test Data\Test DD
SYNC: 10/17/2008 15:10:19:794: Scanning Complete : 6 Files Found, 2 Directories Found, 6125080 Total File Size
SYNC: 10/17/2008 15:10:19:794: Stopped scanning directory : Y:\Test Data\
SYNC: 10/17/2008 15:10:19:904: Scanning Complete : 6 Files Found, 2 Directories Found, 6125061 Total File Size
SYNC: 10/17/2008 15:10:19:904: Stopped scanning directory : Q:\Shared Documents\
SYNC: 10/17/2008 15:10:20:315: Preview of Test Data (Q:\Shared Documents\, Y:\Test Data\) in time 00:00:01:412.
SyncToy action was 'Synchronize'
Found 1 actions to perform.
Found 11 files that did not require action.
Analyzed 7.8 files per second.
Avoided copying 12,250,117 bytes in 11 files.
Saved approximately 00:00:24:00 by not copying any files.

SYNC: 10/17/2008 15:10:25:152: *** Exception during run: {0} :
System.ArgumentException: The FileSyncProvider received an unexpected error while applying a synchronized change.
   at Microsoft.Synchronization.CoreInterop.ISyncSession.Start(CONFLICT_RESOLUTION_POLICY resolutionPolicy, _SYNC_SESSION_STATISTICS& pSyncSessionStatistics)
   at Microsoft.Synchronization.KnowledgeSyncOrchestrator.DoOneWaySyncHelper(SyncIdFormatGroup sourceIdFormats, SyncIdFormatGroup destinationIdFormats, KnowledgeSyncProviderConfiguration destinationConfiguration, SyncCallbacks DestinationCallbacks, ISyncProvider sourceProxy, ISyncProvider destinationProxy, Int32& changesApplied, Int32& changesFailed)
   at Microsoft.Synchronization.KnowledgeSyncOrchestrator.DoOneWayKnowledgeSync(SyncProvider sourceProvider, SyncProvider destinationProvider, Int32& changesApplied, Int32& changesFailed)
   at Microsoft.Synchronization.KnowledgeSyncOrchestrator.Synchronize()
   at Microsoft.Synchronization.SyncOrchestrator.Synchronize()
   at SyncToy.SyncEngine.CreateAndStartSession(FileSyncProvider destinationProvider, FileSyncProvider sourceProvider)
   at SyncToy.SyncEngine.RunSyncSessionsForChosenSyncType(FileSyncProvider leftProvider, FileSyncProvider rightProvider, SyncMode syncMode)
   at SyncToy.SyncEngine.Run(Boolean previewMode)
   at SyncToy.SyncEngine.Sync()
   at SyncToyUI.PreviewDialog.RunOnePair(SyncEngine syncEngine)
SYNC: 10/17/2008 15:10:25:162: *** Exception during run: The FileSyncProvider received an unexpected error while applying a synchronized change.

Friday, October 17, 2008 2:24 PM

Hi StuartR -

In your 4 steps outlined below - do you see any error if you hit the "Preview" button as well? Or only if you hit the "Run" button?

Map a SharePoint to a drive letter
Create a folder pair using this drive letter as the source
Create or modify a file on the local folder
Synchronize

Thanks

Deepa

Monday, November 3, 2008 6:03 PM

Hi -

We have found the problem while syncing to Sharepoint folders and I am afraid that we do not have a workaround for this. So while you can sync down from a sharepoint site - you cannot sync files upto a sharepoint site successfully. We are working on a fix for this and it we will include it in our next SyncToy update.

Thanks

Deepa

Monday, November 3, 2008 7:23 PM

The preview itself does not generate any errors, until I confirm that I want it to go ahead with the changes.

StuartR

Thursday, November 6, 2008 2:28 PM

FWIW, I get the same error.

Vista Home Premium SP1 x64... echoing from c:\ (an NTFS drive) to g: (a USB 2.0 connected Buffalo HD, 500GB, FAT32) using SyncToy 2.0.100.0.

Thanks,
Mike

Friday, November 21, 2008 5:52 AM

FWIW, I too get the same error using SyncToy 2.0.100.0. under these two distinct conditions:

Windows XP Pro SP3 32bit echoing from

c:\ (an NTFS drive) to g: (a USB 2.0 connected Seagate HD, 500GB, NTFS)

and

c:\ (an NTFS drive) to f: (a local network connected Plextor 400GB drive with onboard Windows NT 4.9 Server at network address \\PX-EH\disk)

I anxiously await an update that will remedy these issues as I do like the features version 2 has over those in version 1.4.

thanks,

Dave

Friday, November 28, 2008 3:48 PM

I am getting this error as well:

SYNC: 12/17/2008 15:12:01:080: *** Exception during preview: {0} :
Microsoft.Synchronization.SyncException: Failed to detect changes. ---> System.Runtime.InteropServices.COMException (0x80070040): The FileSyncProvider failed while detecting changes.
   at Microsoft.Synchronization.Files.Interop.FileSyncProviderClass.DetectChanges()
   at Microsoft.Synchronization.Files.FileSyncProvider.DetectChanges()
   --- End of inner exception stack trace ---

You have enough people and information here but if you would like specifics, email me directly and I will provide them.

Wednesday, December 17, 2008 5:10 PM

Count me in as another one havine the same problem.

I was running Vista Ultimate 32 and SyncToy v1.4 - using Echo to a 4TB second generation Drobo and everything worked fine. I just upgraded to Vista Ultimate 64 SP1 (clean install) and SyncToy v2 and started getting the "FileSyncProvider received an unexpectred error. . ." error. I'm going back to SyncToy v1.4 (hope and pray that it runs on Vista 64) until this is resolved.

Monday, December 22, 2008 11:13 PM

Deepa,

Please add my voice to this growing chorus of people having this same problem. Trying to sync Vista Ultimate X64 to my Win XP Pro machine and getting this error in many directories that start with underscores (a lot of them are MS directories from FrontPage days) - but other directories as well. Too many for me to try managing manually.

I just tried to download Synctoy 1.4 and it redirected me to the SyncToy 2.0 download. Please have somebody at MS reconsider the decision to shut off access to 1.4 until this problem is resolved by you guys.

Thanks.

Tuesday, December 23, 2008 6:36 PM

Count me in on this one too. Having the same error, and the exact same messages in the Verbose log. The most frustrating thing is that it seems so random. I have the exact same thing working on a bunch of Windows 2003 Standard servers with no errors at all, working every night...contribute job copying files from one server to a network share on another Windows 2003 Standard server.

It is just the one, so far, that generates this error. If I do a manually copy and paste of the files it will work fine everytime, even with large (200MB) files or more, and it will even run for a few hours if need be with no problems at all. But when I run the job through Synctoy 2.0 on the one server it will fail.

Anyone have any luck yet finding a fix for this one??

Frank

Wednesday, December 31, 2008 2:39 PM

Agreed, I was using synctoy 1.4 to keep files syncrhonized on my parents two computers (both running winxp sp3 home version). I had to reformat one of their computers over Christmas and installed the sync toy 2.0. Version 1.4 works still on the one computer, but the computer with version 2.0 gets the same error as the others have described in the forum. Until this error is resolved synctoy is unusable. I hope Microsoft restores version 1.4 for download. I am currently searching for an alternative solution.

Justin

Wednesday, December 31, 2008 5:53 PM

Hi,

what a day. First my Zune hangs, and now SyncToy2 show me the error
"Exception during run: The FileSyncProvider received an unexpected error while applying a synchronized change"

Ohhhh Microsoft, ohhhhh microsoft. :-(

Here is a link to a german page, where i can download SyncToy 1.4. without redirecting to SyncToy2. No Problems with it although i used the same folders.

http://www.pcwelt.de/downloads/backup_brennen/backup/117163/synctoy/

I hope for a quick solution!!!!!

Greetings from Germany

mr_wunderkind

Thursday, January 1, 2009 3:19 PM

Hi -

To those of you who are syncing to Sharepoint - we know we have a problem and will be fixing it in our next release. And I am afraid there is no workaround available to sync upto the sharepoint server.

The others seem to be related to lossy networks - can anyone seeing non-sharepoint related and non-network ( meaning you are syncing to a drive that is physically connected to a system box) please reply back and also it would help if you would post the stack that you are seeing as well. While it is true that most of you are seeing the same top-level message - seeing the stack gives us more information about lower-level reasons causing the exception.

Thanks and we are working on fixing these issues for our next release.

Thanks

Deepa

Monday, January 5, 2009 10:23 PM

I'm trying to sync to a USB hard drive. I synchronize this same drive to two computers: one running Vista and one running XP. The Vista system has no problems, but the XP one generates the error. It consistently generates the error at the same file each time, but if other files have changed before it gets to the one that SyncToy can't handle, they're handled without issue.

Monday, January 5, 2009 10:30 PM

Hi Shira I'nusyl -

Can you paste your stack - I want to take a look at the exact error code and string that you are seeing.

Thanks

Deepa

Monday, January 5, 2009 10:56 PM

Deepa,
I am having problems as well, system is an XP sp3 computer with usb connected 1 Tb Western Digital My Book drive. Some folder pairs work while others fail consistently. I have used synctoy on the same computer to back up to an 80 Gb firelite smartdisk (usb) and to a drive on another computer on my home network with no problems.

Before recording this log I erased all files in the right folder and the synctoy .dat file in the left folder. I then deleted the folder pair and recreated it, ran a preview then the backup, the backup failed, at approx. 80% complete (by the progress bar), I then restarted backup on the same folder pair and it fails immediately.

Log file:

SYNC: 01/05/2009 18:47:15:593: Started scanning directory : C:\Documents and Settings\David\My Documents\David 2\
SYNC: 01/05/2009 18:47:16:593: Started scanning directory : F:\SyncToy Back-ups\David 2\
SYNC: 01/05/2009 18:47:16:812: Stopped scanning directory : C:\Documents and Settings\David\My Documents\David 2\
SYNC: 01/05/2009 18:47:17:296: Stopped scanning directory : F:\SyncToy Back-ups\David 2\
SYNC: 01/05/2009 18:47:17:718: Preview of David 2 to WD (C:\Documents and Settings\David\My Documents\David 2\, F:\SyncToy Back-ups\David 2\) in time 00:00:02:187.
SyncToy action was 'Contribute'
Found 36 actions to perform.
Found 494 files that did not require action.
Analyzed 225.8 files per second.
Avoided copying 436,935,056 bytes in 494 files.
Saved approximately 00:14:33:00 by not copying any files.

SYNC: 01/05/2009 18:47:35:921: *** Exception during run: {0} :
System.ArgumentException: The FileSyncProvider received an unexpected error while applying a synchronized change.
   at Microsoft.Synchronization.CoreInterop.ISyncSession.Start(CONFLICT_RESOLUTION_POLICY resolutionPolicy, _SYNC_SESSION_STATISTICS& pSyncSessionStatistics)
   at Microsoft.Synchronization.KnowledgeSyncOrchestrator.DoOneWaySyncHelper(SyncIdFormatGroup sourceIdFormats, SyncIdFormatGroup destinationIdFormats, KnowledgeSyncProviderConfiguration destinationConfiguration, SyncCallbacks DestinationCallbacks, ISyncProvider sourceProxy, ISyncProvider destinationProxy, Int32& changesApplied, Int32& changesFailed)
   at Microsoft.Synchronization.KnowledgeSyncOrchestrator.DoOneWayKnowledgeSync(SyncProvider sourceProvider, SyncProvider destinationProvider, Int32& changesApplied, Int32& changesFailed)
   at Microsoft.Synchronization.KnowledgeSyncOrchestrator.Synchronize()
   at Microsoft.Synchronization.SyncOrchestrator.Synchronize()
   at SyncToy.SyncEngine.CreateAndStartSession(FileSyncProvider destinationProvider, FileSyncProvider sourceProvider)
   at SyncToy.SyncEngine.RunSyncSessionsForChosenSyncType(FileSyncProvider leftProvider, FileSyncProvider rightProvider, SyncMode syncMode)
   at SyncToy.SyncEngine.Run(Boolean previewMode)
   at SyncToy.SyncEngine.Sync()
   at SyncToyUI.PreviewDialog.RunOnePair(SyncEngine syncEngine)
SYNC: 01/05/2009 18:47:35:953: *** Exception during run: The FileSyncProvider received an unexpected error while applying a synchronized change.
SYNC: 01/05/2009 18:50:01:796: Started scanning directory : C:\Documents and Settings\David\My Documents\David 2\
SYNC: 01/05/2009 18:50:02:484: Stopped scanning directory : C:\Documents and Settings\David\My Documents\David 2\
SYNC: 01/05/2009 18:50:02:484: Started scanning directory : F:\SyncToy Back-ups\David 2\
SYNC: 01/05/2009 18:50:02:515: Stopped scanning directory : F:\SyncToy Back-ups\David 2\
SYNC: 01/05/2009 18:50:03:328: Preview of David 2 to WD (C:\Documents and Settings\David\My Documents\David 2\, F:\SyncToy Back-ups\David 2\) in time 00:00:01:531.
SyncToy action was 'Contribute'
Found 331 actions to perform.
Found 0 files that did not require action.

SYNC: 01/05/2009 18:53:38:609: *** Exception during run: {0} :
System.ArgumentException: The FileSyncProvider received an unexpected error while applying a synchronized change.
   at Microsoft.Synchronization.CoreInterop.ISyncSession.Start(CONFLICT_RESOLUTION_POLICY resolutionPolicy, _SYNC_SESSION_STATISTICS& pSyncSessionStatistics)
   at Microsoft.Synchronization.KnowledgeSyncOrchestrator.DoOneWaySyncHelper(SyncIdFormatGroup sourceIdFormats, SyncIdFormatGroup destinationIdFormats, KnowledgeSyncProviderConfiguration destinationConfiguration, SyncCallbacks DestinationCallbacks, ISyncProvider sourceProxy, ISyncProvider destinationProxy, Int32& changesApplied, Int32& changesFailed)
   at Microsoft.Synchronization.KnowledgeSyncOrchestrator.DoOneWayKnowledgeSync(SyncProvider sourceProvider, SyncProvider destinationProvider, Int32& changesApplied, Int32& changesFailed)
   at Microsoft.Synchronization.KnowledgeSyncOrchestrator.Synchronize()
   at Microsoft.Synchronization.SyncOrchestrator.Synchronize()
   at SyncToy.SyncEngine.CreateAndStartSession(FileSyncProvider destinationProvider, FileSyncProvider sourceProvider)
   at SyncToy.SyncEngine.RunSyncSessionsForChosenSyncType(FileSyncProvider leftProvider, FileSyncProvider rightProvider, SyncMode syncMode)
   at SyncToy.SyncEngine.Run(Boolean previewMode)
   at SyncToy.SyncEngine.Sync()
   at SyncToyUI.PreviewDialog.RunOnePair(SyncEngine syncEngine)
SYNC: 01/05/2009 18:53:38:609: *** Exception during run: The FileSyncProvider received an unexpected error while applying a synchronized change.
SYNC: 01/05/2009 18:53:48:281: Started scanning directory : C:\Documents and Settings\David\My Documents\David 2\
SYNC: 01/05/2009 18:53:48:625: Stopped scanning directory : C:\Documents and Settings\David\My Documents\David 2\
SYNC: 01/05/2009 18:53:48:625: Started scanning directory : F:\SyncToy Back-ups\David 2\
SYNC: 01/05/2009 18:53:49:406: Stopped scanning directory : F:\SyncToy Back-ups\David 2\
SYNC: 01/05/2009 18:53:49:562: Preview of David 2 to WD (C:\Documents and Settings\David\My Documents\David 2\, F:\SyncToy Back-ups\David 2\) in time 00:00:01:281.
SyncToy action was 'Contribute'
Found 36 actions to perform.
Found 494 files that did not require action.
Analyzed 385.6 files per second.
Avoided copying 436,935,056 bytes in 494 files.
Saved approximately 00:14:33:00 by not copying any files.

SYNC: 01/05/2009 18:53:49:937: *** Exception during run: {0} :
System.ArgumentException: The FileSyncProvider received an unexpected error while applying a synchronized change.
   at Microsoft.Synchronization.CoreInterop.ISyncSession.Start(CONFLICT_RESOLUTION_POLICY resolutionPolicy, _SYNC_SESSION_STATISTICS& pSyncSessionStatistics)
   at Microsoft.Synchronization.KnowledgeSyncOrchestrator.DoOneWaySyncHelper(SyncIdFormatGroup sourceIdFormats, SyncIdFormatGroup destinationIdFormats, KnowledgeSyncProviderConfiguration destinationConfiguration, SyncCallbacks DestinationCallbacks, ISyncProvider sourceProxy, ISyncProvider destinationProxy, Int32& changesApplied, Int32& changesFailed)
   at Microsoft.Synchronization.KnowledgeSyncOrchestrator.DoOneWayKnowledgeSync(SyncProvider sourceProvider, SyncProvider destinationProvider, Int32& changesApplied, Int32& changesFailed)
   at Microsoft.Synchronization.KnowledgeSyncOrchestrator.Synchronize()
   at Microsoft.Synchronization.SyncOrchestrator.Synchronize()
   at SyncToy.SyncEngine.CreateAndStartSession(FileSyncProvider destinationProvider, FileSyncProvider sourceProvider)
   at SyncToy.SyncEngine.RunSyncSessionsForChosenSyncType(FileSyncProvider leftProvider, FileSyncProvider rightProvider, SyncMode syncMode)
   at SyncToy.SyncEngine.Run(Boolean previewMode)
   at SyncToy.SyncEngine.Sync()
   at SyncToyUI.PreviewDialog.RunOnePair(SyncEngine syncEngine)
SYNC: 01/05/2009 18:53:49:937: *** Exception during run: The FileSyncProvider received an unexpected error while applying a synchronized change.

Hope this helps,
Dave

Tuesday, January 6, 2009 1:09 AM

Thanks Dave - it is interesting that SyncToy seems to fail specifically on a particular type of drive ( Western Digital ) and works fine on the others. I see someone else on a different thread also complaining about the same external HD. We will take a look and see what we can do to fix this.

Thanks

Deepa

Tuesday, January 6, 2009 7:31 PM

Hello,

i have the same problem: Exception during run: The FileSyncProvider received an unexpected error while applying a synchronized change

My SyncToy Version:

2.0.100.0
Built: 12.08.2008 15:07:12

My LOG first run:

SYNC: 01/08/2009 17:09:40:218: *** Exception during run: {0} :
System.IO.FileNotFoundException: The FileSyncProvider received an unexpected error while applying a synchronized change.
   bei Microsoft.Synchronization.CoreInterop.ISyncSession.Start(CONFLICT_RESOLUTION_POLICY resolutionPolicy, _SYNC_SESSION_STATISTICS& pSyncSessionStatistics)
   bei Microsoft.Synchronization.KnowledgeSyncOrchestrator.DoOneWaySyncHelper(SyncIdFormatGroup sourceIdFormats, SyncIdFormatGroup destinationIdFormats, KnowledgeSyncProviderConfiguration destinationConfiguration, SyncCallbacks DestinationCallbacks, ISyncProvider sourceProxy, ISyncProvider destinationProxy, Int32& changesApplied, Int32& changesFailed)
   bei Microsoft.Synchronization.KnowledgeSyncOrchestrator.DoOneWayKnowledgeSync(SyncProvider sourceProvider, SyncProvider destinationProvider, Int32& changesApplied, Int32& changesFailed)
   bei Microsoft.Synchronization.KnowledgeSyncOrchestrator.Synchronize()
   bei Microsoft.Synchronization.SyncOrchestrator.Synchronize()
   bei SyncToy.SyncEngine.CreateAndStartSession(FileSyncProvider destinationProvider, FileSyncProvider sourceProvider)
   bei SyncToy.SyncEngine.RunSyncSessionsForChosenSyncType(FileSyncProvider leftProvider, FileSyncProvider rightProvider, SyncMode syncMode)
   bei SyncToy.SyncEngine.Run(Boolean previewMode)
   bei SyncToy.SyncEngine.Sync()
   bei SyncToyUI.PreviewDialog.RunOnePair(SyncEngine syncEngine)
SYNC: 01/08/2009 17:09:40:218: *** Exception during run: The FileSyncProvider received an unexpected error while applying a synchronized change.

My LOG second run:

\\Kandalf\in_out\Chieftec-Datensicherung\Medien\Wordpress\wordpress_2-7\latest\wordpress\wp-includes\Text\Diff
SYNC: 01/08/2009 17:26:11:984: Scanning Directory : \\Kandalf\in_out\Chieftec-Datensicherung\Medien\Wordpress\wordpress_2-7\latest\wordpress\wp-includes\Text\Diff\Engine
SYNC: 01/08/2009 17:26:11:984: Scanning Directory : \\Kandalf\in_out\Chieftec-Datensicherung\Medien\Wordpress\wordpress_2-7\latest\wordpress\wp-includes\Text\Diff\Renderer
SYNC: 01/08/2009 17:26:12:843: Scanning Complete : 61090 Files Found, 3990 Directories Found, 48748938234 Total File Size
SYNC: 01/08/2009 17:26:12:843: Stopped scanning directory : \\Kandalf\in_out\Chieftec-Datensicherung\Medien\
SYNC: 01/08/2009 17:26:18:109: Preview of Medien (D:\Medien\, \\Kandalf\in_out\Chieftec-Datensicherung\Medien\) in time 00:02:21:468.
SyncToy action was 'Synchronize'
Found 1473 actions to perform.
Found 122.180 files that did not require action.
Analyzed 863,7 files per second.
Avoided copying 97.497.876.468 bytes in 122.180 files.
Saved approximately 06:09:55:00 by not copying any files.

SYNC: 01/08/2009 17:26:25:781: *** Exception during run: {0} :
System.IO.FileNotFoundException: The FileSyncProvider received an unexpected error while applying a synchronized change.
   bei Microsoft.Synchronization.CoreInterop.ISyncSession.Start(CONFLICT_RESOLUTION_POLICY resolutionPolicy, _SYNC_SESSION_STATISTICS& pSyncSessionStatistics)
   bei Microsoft.Synchronization.KnowledgeSyncOrchestrator.DoOneWaySyncHelper(SyncIdFormatGroup sourceIdFormats, SyncIdFormatGroup destinationIdFormats, KnowledgeSyncProviderConfiguration destinationConfiguration, SyncCallbacks DestinationCallbacks, ISyncProvider sourceProxy, ISyncProvider destinationProxy, Int32& changesApplied, Int32& changesFailed)
   bei Microsoft.Synchronization.KnowledgeSyncOrchestrator.DoOneWayKnowledgeSync(SyncProvider sourceProvider, SyncProvider destinationProvider, Int32& changesApplied, Int32& changesFailed)
   bei Microsoft.Synchronization.KnowledgeSyncOrchestrator.Synchronize()
   bei Microsoft.Synchronization.SyncOrchestrator.Synchronize()
   bei SyncToy.SyncEngine.CreateAndStartSession(FileSyncProvider destinationProvider, FileSyncProvider sourceProvider)
   bei SyncToy.SyncEngine.RunSyncSessionsForChosenSyncType(FileSyncProvider leftProvider, FileSyncProvider rightProvider, SyncMode syncMode)
   bei SyncToy.SyncEngine.Run(Boolean previewMode)
   bei SyncToy.SyncEngine.Sync()
   bei SyncToyUI.PreviewDialog.RunOnePair(SyncEngine syncEngine)
SYNC: 01/08/2009 17:26:25:781: *** Exception during run: The FileSyncProvider received an unexpected error while applying a synchronized change.

Can somebody help me? Whats wrong at me?

Thursday, January 8, 2009 4:28 PM

IT WORKS!

A friend at work suggested I try reformatting my external hard drive (Western Digital) and see if that helps, this solved some back up issues that he was having but with some different software.

First thing I noticed was the WD drive was configured as FAT32 which I thought was odd since it is a 1 TB drive. I reformatted overnight (this time to NTFS) and just finished recreating the folder pair that consistently failed to complete and not only did it run to completion but it ran about twice as fast as it did prior to the reformat.

Another folder pair with 4000 files has been running while I was writting this and it just completed as well.

Reformatting may not be the solution for everyone but it looks like it solved my problem.

Dave

Friday, January 9, 2009 1:22 PM

Hi Dave -

That is good news ! While we have done minimal testing on FAT32 - I am not surprised that it fails sometimes with large data sets. I assumed you were formatted as NTFS - 1 TB disks usually are and I checked on the disk I got and it had NTFS as well.

Thanks

Deepa

Saturday, January 10, 2009 12:03 AM

I'm having the same issue "exception during run: Filesyncprovider recieved an unexpected error while applying a syncronization change"

see log below:

SYNC: 01/12/2009 15:20:08:670: *** Exception during run: {0} :
System.ArgumentException: The FileSyncProvider received an unexpected error while applying a synchronized change.
   at Microsoft.Synchronization.CoreInterop.ISyncSession.Start(CONFLICT_RESOLUTION_POLICY resolutionPolicy, _SYNC_SESSION_STATISTICS& pSyncSessionStatistics)
   at Microsoft.Synchronization.KnowledgeSyncOrchestrator.DoOneWaySyncHelper(SyncIdFormatGroup sourceIdFormats, SyncIdFormatGroup destinationIdFormats, KnowledgeSyncProviderConfiguration destinationConfiguration, SyncCallbacks DestinationCallbacks, ISyncProvider sourceProxy, ISyncProvider destinationProxy, Int32& changesApplied, Int32& changesFailed)
   at Microsoft.Synchronization.KnowledgeSyncOrchestrator.DoOneWayKnowledgeSync(SyncProvider sourceProvider, SyncProvider destinationProvider, Int32& changesApplied, Int32& changesFailed)
   at Microsoft.Synchronization.KnowledgeSyncOrchestrator.Synchronize()
   at Microsoft.Synchronization.SyncOrchestrator.Synchronize()
   at SyncToy.SyncEngine.CreateAndStartSession(FileSyncProvider destinationProvider, FileSyncProvider sourceProvider)
   at SyncToy.SyncEngine.RunSyncSessionsForChosenSyncType(FileSyncProvider leftProvider, FileSyncProvider rightProvider, SyncMode syncMode)
   at SyncToy.SyncEngine.Run(Boolean previewMode)
   at SyncToy.SyncEngine.Sync()
   at SyncToyUI.PreviewDialog.RunOnePair(SyncEngine syncEngine)
SYNC: 01/12/2009 15:20:08:680: *** Exception during run: The FileSyncProvider received an unexpected error while applying a synchronized change.

Monday, January 12, 2009 9:22 PM

An update to my last post discussing how reformatting to NTFS fixed my Synctoy problems when backing up to my Western Digital external drive. Both the drive and my computer have esata ports so yesterday I picked a 6' esata cable to replace the usb connection. Did some backups last night and not only did it work but I estimate the speed was 5 or 6 times faster than transfering over the usb connection.

Dave

Tuesday, January 13, 2009 3:50 PM

Another user receiving the same error message. SyncToying to an external hard drive (NTFS) works just fine, but SyncToying to a flash drive (either FAT or FAT32) yields the error: "Exception during run: The FileSyncProvider received an unexpected error while writing a change"

Given Dave's situation, perhaps the file system is the problem here?

This problem did not occur with SyncToy 1.4. I'm running XP Pro SP3. The log is below.

UPDATE: My original difficulties with the flash drive involved a folder of size 900 MB. I tried it with a folder of about 1 MB and it worked. I also tried it with a folder of about 300 MB and it worked. However, the 900 MB continues to generate the error message (at the beginning of the run sequence).

Thanks,
Mike

SyncToy action was 'Synchronize'
Found 4832 actions to perform.
Found 0 files that did not require action.

SYNC: 01/14/2009 09:04:10:531: *** Exception during run: {0} :
System.ArgumentException: The FileSyncProvider received an unexpected error while applying a synchronized change.
   at Microsoft.Synchronization.CoreInterop.ISyncSession.Start(CONFLICT_RESOLUTION_POLICY resolutionPolicy, _SYNC_SESSION_STATISTICS& pSyncSessionStatistics)
   at Microsoft.Synchronization.KnowledgeSyncOrchestrator.DoOneWaySyncHelper(SyncIdFormatGroup sourceIdFormats, SyncIdFormatGroup destinationIdFormats, KnowledgeSyncProviderConfiguration destinationConfiguration, SyncCallbacks DestinationCallbacks, ISyncProvider sourceProxy, ISyncProvider destinationProxy, Int32& changesApplied, Int32& changesFailed)
   at Microsoft.Synchronization.KnowledgeSyncOrchestrator.DoOneWayKnowledgeSync(SyncProvider sourceProvider, SyncProvider destinationProvider, Int32& changesApplied, Int32& changesFailed)
   at Microsoft.Synchronization.KnowledgeSyncOrchestrator.Synchronize()
   at Microsoft.Synchronization.SyncOrchestrator.Synchronize()
   at SyncToy.SyncEngine.CreateAndStartSession(FileSyncProvider destinationProvider, FileSyncProvider sourceProvider)
   at SyncToy.SyncEngine.RunSyncSessionsForChosenSyncType(FileSyncProvider leftProvider, FileSyncProvider rightProvider, SyncMode syncMode)
   at SyncToy.SyncEngine.Run(Boolean previewMode)
   at SyncToy.SyncEngine.Sync()
   at SyncToyUI.PreviewDialog.RunOnePair(SyncEngine syncEngine)
SYNC: 01/14/2009 09:04:10:531: *** Exception during run: The FileSyncProvider received an unexpected error while applying a synchronized change.

Wednesday, January 14, 2009 2:13 PM

I have on both systems NTFS, but i get the error.

Saturday, January 17, 2009 11:29 AM

Even with NTFS as your original file system you may want to try a reformt anyway. My collegue that suggested this to me had NTFS and a reformat solved his problems, however he was not using SyncToy.

Dave

Saturday, January 17, 2009 5:23 PM

Deepa,

I receive this error when syncing from my Vista SP1 (NTFS) D: drive to a SanDisk Ultra II 4GB SD card (FAT16 or FAT32 formatted).

An interesting side note is that I originally partitioned this 4GB SDHC card using an Ubuntu 8.10 live CD under Linux with a primary FAT16 partition (2048MB), a second primary ext3 partition (1024GB), and the rest unallocated. In Windows, of course, I only see the FAT16 partition. I tried reformatting the FAT16 partition under Vista to FAT32, and SyncToy gave the same error. As soon as I format it to NTFS, the error goes away and it syncs fine.

It seems quite obvious to me from all the posts that it has something to do with the way SyncToy 2.0.100.0 is accessing the file system and/or physical disk structure.

Formatting to NTFS is no good because the whole reason I'm using SyncToy is to transfer the files back and forth on my SD card to a non-MS operating system that doesn't understand NTFS!

What is the update on this?

Monday, January 19, 2009 2:33 AM

Can MS please provide a link to download 1.4? 2.0 isn't working for me (I'm getting frustrated) and I need to sync critical files ASAP.

I don't see why you've posted a download link to a txt file asking me to download 2.0... :(

Tuesday, February 17, 2009 5:32 AM

Since my last post, I ran "convert.exe" to change the destination drive from FAT32 to NTFS. I had to check and remove errors prior to conversion, but after that, the drive converted and SyncToy ran without errors.

Mike

Saturday, February 28, 2009 5:43 PM

NTFS is not a viable option for most removable media, as I understand it.

I would appreciate hearing a list of situations that could cause the error, so that I can try and work around the issue.

Of course, it would be nice to have the issue addressed, or at least a more informative message...

Monday, March 2, 2009 11:04 PM

I receive this same error on all my Echo-sync Folder Pairs now. I never had a problem with v1.4, but with v2.0 it now fails on all my folder pairs.

It used to work on all of them, but over the past few months, one-by-one each of my folder pairs has eventually failed with this error, and now none work. The last one finally stopped working today with the following in the log:

SYNC: 03/07/2009 13:22:12:664: Started scanning directory : D:\Music\
SYNC: 03/07/2009 13:22:12:669: Started scanning directory : M:\Music\
SYNC: 03/07/2009 13:22:17:198: Stopped scanning directory : D:\Music\
SYNC: 03/07/2009 13:22:18:085: Stopped scanning directory : M:\Music\
SYNC: 03/07/2009 13:22:40:561: Preview of Music (D:\Music\, M:\Music\) in time 00:00:27:898.
SyncToy action was 'Echo'
Found 7502 actions to perform.
Found 6,861 files that did not require action.
Analyzed 245.9 files per second.
Avoided copying 30,117,770,575 bytes in 6,861 files.
Saved approximately 16:43:55:00 by not copying any files.

SYNC: 03/07/2009 13:22:40:991: *** Exception during run: {0} :
System.ArgumentException: The FileSyncProvider received an unexpected error while applying a synchronized change.
   at Microsoft.Synchronization.CoreInterop.ISyncSession.Start(CONFLICT_RESOLUTION_POLICY resolutionPolicy, _SYNC_SESSION_STATISTICS& pSyncSessionStatistics)
   at Microsoft.Synchronization.KnowledgeSyncOrchestrator.DoOneWaySyncHelper(SyncIdFormatGroup sourceIdFormats, SyncIdFormatGroup destinationIdFormats, KnowledgeSyncProviderConfiguration destinationConfiguration, SyncCallbacks DestinationCallbacks, ISyncProvider sourceProxy, ISyncProvider destinationProxy, Int32& changesApplied, Int32& changesFailed)
   at Microsoft.Synchronization.KnowledgeSyncOrchestrator.DoOneWayKnowledgeSync(SyncProvider sourceProvider, SyncProvider destinationProvider, Int32& changesApplied, Int32& changesFailed)
   at Microsoft.Synchronization.KnowledgeSyncOrchestrator.Synchronize()
   at Microsoft.Synchronization.SyncOrchestrator.Synchronize()
   at SyncToy.SyncEngine.CreateAndStartSession(FileSyncProvider destinationProvider, FileSyncProvider sourceProvider)
   at SyncToy.SyncEngine.RunSyncSessionsForChosenSyncType(FileSyncProvider leftProvider, FileSyncProvider rightProvider, SyncMode syncMode)
   at SyncToy.SyncEngine.Run(Boolean previewMode)
   at SyncToy.SyncEngine.Sync()
   at SyncToyUI.PreviewDialog.RunOnePair(SyncEngine syncEngine)
SYNC: 03/07/2009 13:22:40:991: *** Exception during run: The FileSyncProvider received an unexpected error while applying a synchronized change.

I am backing up to an external Seagate FAT32 drive, mapped to a drive letter. Reformatting as NTFS is not an option as this drive needs to be used on various machines, not all of which support NTFS.

It's so sad...SyncToy used to be a great tool, but v2.0 is seriously broken. Not only can I not use it anymore because of this error, but I would have serious reservations against trusting it for any use other than in 'Echo' mode.

-Paulo

Edited by Paulo F Ferreira Saturday, March 7, 2009 6:24 PM

Saturday, March 7, 2009 6:12 PM

Oh, to followup on my original post, can anyone suggest a SyncToy replacement that *does* work?

Thanks,

-Paulo

Saturday, March 7, 2009 6:15 PM

Paulo,

I'd suggest just going back to version 1.4. That's what I did, and it's all working fine now. I have the file... if there's a way for me to get it to you, I'm willing to do so.

Mike

Sunday, March 15, 2009 4:38 AM

Another one - Although in my case I've never used 1.4. My problem just started recently.

Host: Vista x64/SP1 (6.0.6001 Service PAck 1 Build 6001)
Client: WHS Version 5.2 (Build 3790.srv03_sp2_gdr.080813-1204 : Service Pack 2)
SyncToy: 2:0: Version 2.0.100.0, Built 8/12/2008 2:07:12 PM

I've been running 2.0(x64) for some time, but just recently started seeing these errors. There have been no changes to my systems nor network other than the periodic Windows Updates.
Failure occurs on the same file but not at the same % completion. Failure occurs either with Run or Preview | Run.
I completely removed SyncToy and all dat files, reinstalled and failures continue to occur.

SYNC: 03/16/2009 07:53:47:348: Scanning Complete : 382 Files Found, 122 Directories Found, 32103545221 Total File Size
SYNC: 03/16/2009 07:53:47:364: Stopped scanning directory : D:\Updates\
SYNC: 03/16/2009 07:53:47:473: Scanning Complete : 378 Files Found, 121 Directories Found, 27986318213 Total File Size
SYNC: 03/16/2009 07:53:47:473: Stopped scanning directory : \\PLUTO\Updates\
SYNC: 03/16/2009 07:53:47:957: Preview of Sync Updates (D:\Updates\, \\PLUTO\Updates\) in time 00:00:01:14.
SyncToy action was 'Synchronize'
Found 5 actions to perform.
Found 756 files that did not require action.
Analyzed 745.6 files per second.
Avoided copying 55,972,636,426 bytes in 756 files.
Saved approximately 07:05:45:00 by not copying any files.

SYNC: 03/16/2009 07:54:34:453: *** Exception during run: {0} :
Microsoft.Synchronization.SyncException: The FileSyncProvider received an unexpected error while writing a change. ---> System.Runtime.InteropServices.COMException (0x80070040): The FileSyncProvider received an unexpected error while writing a change.
   at Microsoft.Synchronization.CoreInterop.ISyncSession.Start(CONFLICT_RESOLUTION_POLICY resolutionPolicy, _SYNC_SESSION_STATISTICS& pSyncSessionStatistics)
   at Microsoft.Synchronization.KnowledgeSyncOrchestrator.DoOneWaySyncHelper(SyncIdFormatGroup sourceIdFormats, SyncIdFormatGroup destinationIdFormats, KnowledgeSyncProviderConfiguration destinationConfiguration, SyncCallbacks DestinationCallbacks, ISyncProvider sourceProxy, ISyncProvider destinationProxy, Int32& changesApplied, Int32& changesFailed)
   --- End of inner exception stack trace ---
   at Microsoft.Synchronization.KnowledgeSyncOrchestrator.DoOneWaySyncHelper(SyncIdFormatGroup sourceIdFormats, SyncIdFormatGroup destinationIdFormats, KnowledgeSyncProviderConfiguration destinationConfiguration, SyncCallbacks DestinationCallbacks, ISyncProvider sourceProxy, ISyncProvider destinationProxy, Int32& changesApplied, Int32& changesFailed)
   at Microsoft.Synchronization.KnowledgeSyncOrchestrator.DoOneWayKnowledgeSync(SyncProvider sourceProvider, SyncProvider destinationProvider, Int32& changesApplied, Int32& changesFailed)
   at Microsoft.Synchronization.KnowledgeSyncOrchestrator.Synchronize()
   at Microsoft.Synchronization.SyncOrchestrator.Synchronize()
   at SyncToy.SyncEngine.CreateAndStartSession(FileSyncProvider destinationProvider, FileSyncProvider sourceProvider)
   at SyncToy.SyncEngine.RunSyncSessionsForChosenSyncType(FileSyncProvider leftProvider, FileSyncProvider rightProvider, SyncMode syncMode)
   at SyncToy.SyncEngine.Run(Boolean previewMode)
   at SyncToy.SyncEngine.Sync()
   at SyncToyUI.PreviewDialog.RunOnePair(SyncEngine syncEngine)
SYNC: 03/16/2009 07:54:34:453: *** Exception during run: The FileSyncProvider received an unexpected error while writing a change.

Monday, March 16, 2009 3:06 PM

Deepa,

I am running Vista Enterprise. I have the same error to a USB attached WD Passport disk. I can backup some directories, but backing up c:\users\peteh fails unless I check the exclude read-only box. The problem is that none of the files it is trying to backup up are read-only. Unfortunately, when I check the box, c:\users\peteh\[Music|Documents] get skipped.

I ran with "exclude read-only" and copies much of my profile. I run without "exclude read-only" and it fails after doing the scan of both sides for actions. So I ran a preview and saw all the files it thought it now had to copy with the "exclude read-only" off. I did a random check and none show the read only attribute set. I even forced ownership on my Documents directory and that did not help.

Pete

Friday, March 20, 2009 12:14 AM

I have the same issue, running XP SP3.
trying to sync between a WD passport and a WD mybook worked ok with v1.4 here is the tail of the verbose log file. it seems to have scanned all dirs and files, but gives me the error at that directory (which happens to be the latest file) Syncing just that dir works fine.

copying my music files between the two (~100GB ~28,000 files, ~2600 directories)
SYNC: 05/25/2009 10:56:30:750: Scanning Directory : G:\Music\Jack's Mannequin
SYNC: 05/25/2009 10:56:30:750: Scanning Directory : G:\Music\Jack's Mannequin\The Glass Passenger
SYNC: 05/25/2009 10:56:31:109: Scanning Complete : 26452 Files Found, 2691 Directories Found, 104668143813 Total File Size
SYNC: 05/25/2009 10:56:31:109: Stopped scanning directory : G:\Music\
SYNC: 05/25/2009 10:56:31:140: *** Exception during preview: {0} :
System.IO.FileNotFoundException: The FileSyncProvider failed while detecting changes.

Server stack trace:
   at Microsoft.Synchronization.Files.Interop.FileSyncProviderClass.DetectChanges()
   at Microsoft.Synchronization.Files.FileSyncProvider.DetectChanges()
   at SyncToy.SyncEngine.DetectChangesOnProvider(FileSyncProvider syncProvider, String replicaRootPath)
   at System.Runtime.Remoting.Messaging.StackBuilderSink._PrivateProcessMessage(IntPtr md, Object[] args, Object server, Int32 methodPtr, Boolean fExecuteInContext, Object[]& outArgs)
   at System.Runtime.Remoting.Messaging.StackBuilderSink.PrivateProcessMessage(RuntimeMethodHandle md, Object[] args, Object server, Int32 methodPtr, Boolean fExecuteInContext, Object[]& outArgs)
   at System.Runtime.Remoting.Messaging.StackBuilderSink.AsyncProcessMessage(IMessage msg, IMessageSink replySink)

Exception rethrown at [0]:
   at System.Runtime.Remoting.Proxies.RealProxy.EndInvokeHelper(Message reqMsg, Boolean bProxyCase)
   at System.Runtime.Remoting.Proxies.RemotingProxy.Invoke(Object NotUsed, MessageData& msgData)
   at SyncToy.SyncEngine.DetectChanges.EndInvoke(IAsyncResult result)
   at SyncToy.SyncEngine.Run(Boolean previewMode)
   at SyncToy.SyncEngine.Preview()
   at SyncToyUI.PreviewDialog.PreviewOnePair(SyncEngine she)
SYNC: 05/25/2009 10:56:31:140: *** Exception during preview: The FileSyncProvider failed while detecting changes.

Monday, May 25, 2009 3:06 PM

Since my last post, I ran "convert.exe" to change the destination drive from FAT32 to NTFS. I had to check and remove errors prior to conversion, but after that, the drive converted and SyncToy ran without errors.

Mike

For those of you with Western Digital External Harddrivee and XP, this is the solution! It keeps the data whereas reformat deletes it all.

Sunday, July 5, 2009 5:09 PM

Ihad tried this both from the failing pc, and also the one it works on (my laptop) and it still wouldn't work. did you do anything else other than convert ?
did you use chkdsk to fix errors ? (i did, but like I say still failed)

Sunday, July 5, 2009 9:19 PM

This thread has been running for nearly a year with minimal input from Microsoft and no fix. The problem appears to affect linux based networ storage (SMB) which means it's a major problem for people using NAS. I know that SyncToy is provided "as is", but there is no mention of the problem on the site advertising it. As it stands, SyncToy is unrelaible (useless) for writing to any network device that's not running windows, and Microsoft should say so rather than touting it as a reliable backup tool.

Doug

Tuesday, July 7, 2009 1:25 PM

I know, right? I just upgrade to 2 b/c I thought I could edit folder pairs ( left/right paths ) in 2. Well, not only can I still not edit them, but now my sync is broken ( and badly ).

I sure hope that I can downgrade back to 1.4.

Thursday, July 9, 2009 7:25 PM

I was getting this error with an external USB2 hard drive (Freecom), when it was formatted as FAT32 - converted it to NTFS and suddenly the problem goes away. I wonder if it is related to streams, or security settings (e.g. 'this file is blocked because it came from the web) which FAT32 knows nothing about, and some of which have popped up since later updates to WinXP. (this was on an XP system .... I have whole other sets of issues on Vista systems, including total inability to 'pull' any 'blocked' files).

Saturday, August 8, 2009 8:29 PM

I'm using Synctoy 2.0 on several machines, mostly to sync with folders on my WHS.

Last Friday I was taking my Laptop (Windows XP Pro SP3) away so I synced my folders to the WHS share before I left, the sync completed OK.

On returning home with a good number of fresh files on the laptop that I wanted to sync with the Server, SyncToy produced this 'Exception During Run' error. A Preview produces no errors, but the sync fails.

After a couple of reboots, I copied the troublesome files manually (they were all in 'new' folders on the Laptop) and after three or four attempts, the folder sync now works normally. Sorry I don't have any verbose logs to offer, but I will say that some of my Network paths are quite long, eg 6 folders or more deep. The Folder pair has always worked before though.

Here's the logs from the last two runs (Zaphod is my WHS) including the successfull one after I had copied over the last few files manually.

SYNC: 08/25/2009 11:41:54:917: *** Exception during run: {0} :
System.IO.FileNotFoundException: The FileSyncProvider received an unexpected error while applying a synchronized change.
   at Microsoft.Synchronization.CoreInterop.ISyncSession.Start(CONFLICT_RESOLUTION_POLICY resolutionPolicy, _SYNC_SESSION_STATISTICS& pSyncSessionStatistics)
   at Microsoft.Synchronization.KnowledgeSyncOrchestrator.DoOneWaySyncHelper(SyncIdFormatGroup sourceIdFormats, SyncIdFormatGroup destinationIdFormats, KnowledgeSyncProviderConfiguration destinationConfiguration, SyncCallbacks DestinationCallbacks, ISyncProvider sourceProxy, ISyncProvider destinationProxy, Int32& changesApplied, Int32& changesFailed)
   at Microsoft.Synchronization.KnowledgeSyncOrchestrator.DoOneWayKnowledgeSync(SyncProvider sourceProvider, SyncProvider destinationProvider, Int32& changesApplied, Int32& changesFailed)
   at Microsoft.Synchronization.KnowledgeSyncOrchestrator.Synchronize()
   at Microsoft.Synchronization.SyncOrchestrator.Synchronize()
   at SyncToy.SyncEngine.CreateAndStartSession(FileSyncProvider destinationProvider, FileSyncProvider sourceProvider)
   at SyncToy.SyncEngine.RunSyncSessionsForChosenSyncType(FileSyncProvider leftProvider, FileSyncProvider rightProvider, SyncMode syncMode)
   at SyncToy.SyncEngine.Run(Boolean previewMode)
   at SyncToy.SyncEngine.Sync()
   at SyncToyUI.PreviewDialog.RunOnePair(SyncEngine syncEngine)
SYNC: 08/25/2009 11:41:54:917: *** Exception during run: The FileSyncProvider received an unexpected error while applying a synchronized change.
SYNC: 08/25/2009 11:44:21:151: Started scanning directory : C:\Documents and Settings\Malcolm\My Documents\BRCA\
SYNC: 08/25/2009 11:44:22:604: Started scanning directory : \\Zaphod\brca docs\
SYNC: 08/25/2009 11:44:33:838: Stopped scanning directory : C:\Documents and Settings\Malcolm\My Documents\BRCA\
SYNC: 08/25/2009 11:44:51:135: Stopped scanning directory : \\Zaphod\brca docs\
SYNC: 08/25/2009 11:44:55:135: Preview of BRCA Docs (C:\Documents and Settings\Malcolm\My Documents\BRCA\, \\Zaphod\brca docs\) in time 00:00:33:984.
SyncToy action was 'Synchronize'
Found 69 actions to perform.
Found 33,310 files that did not require action.
Analyzed 980.2 files per second.
Avoided copying 2,863,106,316 bytes in 33,310 files.
Saved approximately 01:35:26:00 by not copying any files.

SYNC: 08/25/2009 11:45:08:760: SyncToy run of BRCA Docs (C:\Documents and Settings\Malcolm\My Documents\BRCA\, \\Zaphod\brca docs\) completed at 25/Aug/2009 11:45:08.
SyncToy action was 'Synchronize'.
SyncToy options were:
Active for run all
All files included
No files excluded
Do not check file contents
Include read-only files
Include hidden files
Include system files
Backup older files (send to Recycle Bin)
Some subfolders included
SyncToy run took 00:00:13:578.
Copied 1,770,976 bytes in 69 files in 00:00:13:578.
Bytes per second 130,428.6, files per second 5.1.
Avoided copying 2,863,106,316 bytes in 33,310 files that did not require action.
Saved approximately 06:05:51:520 by not copying all files.

Malcolm Norwood

Proposed as answer by vdjtvj Saturday, November 7, 2009 7:52 PM

Tuesday, August 25, 2009 11:03 AM

Hi Deepa and All,

I think SyncToy 2.0 is unable to hold on to the network connection. To keep the network connection active/alive, there is a workaround.
Open "Windows Explorer" and select the "Non-Local" or "Remote" network folder in it. This will keep the network connection active and then SyncToy 2.0 can do its job.

Thanks,
Vikram

Saturday, November 7, 2009 7:51 PM

Hi All,

I think SyncToy 2.0 is unable to hold on to the network connection. To keep the network connection active/alive, there is a workaround.
Open "Windows Explorer" and select the "Non-Local" or "Remote" network folder in it. This will keep the network connection active and then SyncToy 2.0 can do its job.

Thanks,
Vikram

Saturday, November 7, 2009 8:01 PM

If anyone's still checking this thread, the problem seems to be fixed with SyncToy 2.1. At least it worked for me.

Tuesday, November 17, 2009 5:02 PM

Hi.

I experienced this error when i tried to sync my pictures folder and it was solved when i found and removed a hidden .tmp file in my pictures folder.

Tuesday, December 8, 2009 12:16 PM

Just to add a +1 to experiencing the "SYNC: 12/23/2009 14:39:00:064: *** Exception during run: The FileSyncProvider received an unexpected error while applying a synchronized change." whilst syncing from Vista Business Edition to a Sharepoint 2007 Server.

I have absolutely no problem syncing between the same machine and my main PC (Windows XP Pro), nor many folders between both machines and my WHS.

This is the 'first' sync up to the Sharepoint, to seed the document store there, hence lots of writes.

So - any news on a new an update to SyncToy 2.0 to resolve this issue??

Regards
Sean P

SYNC: 12/23/2009 14:01:04:803: -------------------------------------------------------------------------
SYNC: 12/23/2009 14:01:04:869: Starting SyncToy, version 2.0.100.0, built 12/08/2008 15:07:12.

I don't wish to provide the full log details for privacy / confidentiality reasons, but the latter part of the log is thus:

SyncToy action was 'Synchronize'
Found 247 actions to perform.
Found 0 files that did not require action.

SYNC: 12/23/2009 14:39:00:064: *** Exception during run: {0} :
Microsoft.Synchronization.SyncException: The FileSyncProvider received an unexpected error while applying a synchronized change. ---> System.Runtime.InteropServices.COMException (0x800700DE): The FileSyncProvider received an unexpected error while applying a synchronized change.
   at Microsoft.Synchronization.CoreInterop.ISyncSession.Start(CONFLICT_RESOLUTION_POLICY resolutionPolicy, _SYNC_SESSION_STATISTICS& pSyncSessionStatistics)
   at Microsoft.Synchronization.KnowledgeSyncOrchestrator.DoOneWaySyncHelper(SyncIdFormatGroup sourceIdFormats, SyncIdFormatGroup destinationIdFormats, KnowledgeSyncProviderConfiguration destinationConfiguration, SyncCallbacks DestinationCallbacks, ISyncProvider sourceProxy, ISyncProvider destinationProxy, Int32& changesApplied, Int32& changesFailed)
   --- End of inner exception stack trace ---
   at Microsoft.Synchronization.KnowledgeSyncOrchestrator.DoOneWaySyncHelper(SyncIdFormatGroup sourceIdFormats, SyncIdFormatGroup destinationIdFormats, KnowledgeSyncProviderConfiguration destinationConfiguration, SyncCallbacks DestinationCallbacks, ISyncProvider sourceProxy, ISyncProvider destinationProxy, Int32& changesApplied, Int32& changesFailed)
   at Microsoft.Synchronization.KnowledgeSyncOrchestrator.DoOneWayKnowledgeSync(SyncProvider sourceProvider, SyncProvider destinationProvider, Int32& changesApplied, Int32& changesFailed)
   at Microsoft.Synchronization.KnowledgeSyncOrchestrator.Synchronize()
   at Microsoft.Synchronization.SyncOrchestrator.Synchronize()
   at SyncToy.SyncEngine.CreateAndStartSession(FileSyncProvider destinationProvider, FileSyncProvider sourceProvider)
   at SyncToy.SyncEngine.RunSyncSessionsForChosenSyncType(FileSyncProvider leftProvider, FileSyncProvider rightProvider, SyncMode syncMode)
   at SyncToy.SyncEngine.Run(Boolean previewMode)
   at SyncToy.SyncEngine.Sync()
   at SyncToyUI.PreviewDialog.RunOnePair(SyncEngine syncEngine)
SYNC: 12/23/2009 14:39:00:064: *** Exception during run: The FileSyncProvider received an unexpected error while applying a synchronized change.

Wednesday, December 23, 2009 2:59 PM

I had the same problem (all of a sudden...I think a Windows patch load caused it), running Sync 2.0 on Windows Server 2003. I upgraded to SyncToy 2.1...problem went away.

Monday, October 18, 2010 3:06 AM

I was having problems syncing a folder on my XP system to a QNAP 219 NAS. It kept failing saying unable to copy file, etc.

I fixed this by removing encryption on the folder. I had R-Crypto 256-bit on the folder. I removed the encryption and the files synced.

Sunday, July 3, 2011 6:20 AM

Dear mkp007, see also the thread here:

https://social.microsoft.com/Forums/en-US/0c3e235e-1419-4653-9cdf-d79e82d43c7b/synctoy-21-does-not-support-efs-encrypted-files-syncronization-in-windows-7?forum=synctoy

Thursday, August 13, 2015 4:38 AM

Answered by:

Exception during run: The FileSyncProvider received an unexpected error while writing a change

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