Hi Casho,
I do not have a Vista Business environment, so I tried your scenario with Vista Enterprise instead. On my machine, SyncToy 2.1 synced the contents in App Data folder as expected. I think you can check the following things that may cause your problem:
1. The “App Data” folder is a hidden folder. So please make sure the “Exclude hidden files” and the “Exclude system files” have been disabled.
2. SyncToy may need enough permission to access the “App Data” folder. So try if running SyncToy as Administrator can resolve your issue.
And please note that there is a known issue of SyncToy 2.0/2.1 that it cannot sync any file which is being used by other programs. A runtime error like “Error: Cannot read from the source file xxx. The process cannot access the file because it is being used by another process. (Exception from HRESULT: 0x80070020)” will be raised if SyncToy tries to sync such files. The problem is there are such files in “App Data” folder.
Another issue of “App Data” folder is some applications work well only with the data files created by themselves. So the x-copied data files may cause problem.
Thus it is not recommended to Sync the entire App Data folder. It would be better if you only sync the sub folders you need in it. You can approach this by “setting subfolders” section in “Change Options” window.
Thanks
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