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Backup failed "the computer can not be authenticated" RRS feed

  • Question

  • HI,

    saturday i installed WIN8.1 on a new PC. After some Problems to install the connector, there is only one Problem left. Client backups fail with this error: the computer can not be authenticated

    What i did:

    - while installing connector sofware -> error "Computer can not trust the Server" -> impored the Server certificat -> Problem solved

    - the Server says the computer as offline -> new Computer is UEFI -PC -> installed UEFI update -> problem solved

    - reinstalled Server connector on all PCs

    Client backups failed on all PCs with this error:

    "the computer can not be authenticated" AND the dashboard shows only 3 tasks für this PC instead of 6.

    Monday, October 21, 2013 6:15 PM

All replies

  • This is the message from the Event-Log

    - <Event xmlns="http://schemas.microsoft.com/win/2004/08/events/event">
    - <System>
      <Provider Name="Windows Server" /> 
      <EventID Qualifiers="53247">514</EventID> 
      <Level>2</Level> 
      <Task>2</Task> 
      <Keywords>0x80000000000000</Keywords> 
      <TimeCreated SystemTime="2013-10-21T21:29:36.000000000Z" /> 
      <EventRecordID>22</EventRecordID> 
      <Channel>WSSG</Channel> 
      <Computer>WIN8-PC.damhus.local</Computer> 
      <Security /> 
      </System>
    - <EventData>
      <Data>0</Data> 
      <Data>WHS</Data> 
      <Data>Authentication, System.String[]</Data> 
      </EventData>
      </Event>

    Monday, October 21, 2013 9:34 PM
  • Hi,

    Thanks for posting in the forum.

    Regarding the current issue, I suggest you could try to refer to the following article for troubleshooting.

    My Windows Home Server 2011 Backups Failed But I Fixed It (With Some Help)

    http://blogs.technet.com/b/tlyons/archive/2013/05/15/my-windows-home-server-2011-backups-failed-but-i-fixed-it-with-some-help.aspx

    Here is the similar thread as reference, hope it helps.

    Backups failing - The server cannot authenticate the computer

    http://social.technet.microsoft.com/Forums/en-US/fbfa7406-2830-4da6-ab96-a14a451ee20b/backups-failing-the-server-cannot-authenticate-the-computer?forum=winserveressentials

    Best Regards,

    Andy Qi


    We are trying to better understand customer views on social support experience, so your participation in this interview project would be greatly appreciated if you have time.
    Thanks for helping make community forums a great place.

    Wednesday, October 23, 2013 11:11 AM
  • i tried both links now. The result, the same error. And there are only three tasks for all computers now, so i cant setup the backup.

    This is the BackupLaunchpad.log from a client PC

    ---------------------------------------------------------
    [9820] 131024.193014.6152: BackupLaunchpad: Program.Main(): BackupLaunchpad started
    [9820] 131024.193014.8442: General: Initializing...C:\Program Files\Windows Server\Bin\BackupLaunchpad.exe
    [9820] 131024.193014.8943: ProviderFramework: Information: [0] : Register to listen to ProviderRegistryConnectionMgmt connected event.
    [9820] 131024.193014.8983: ProviderFramework: Information: [0] : ProviderRegistryProxy: Beginning connection attempt.
    [9820] 131024.193014.9093: ProviderFramework: Information: [0] : ProviderRegistryProxy: Creating proxy for AutoReconnecter.
    [9820] 131024.193014.9182: ProviderFramework: Information: [0] : ConnectionMgmt: _CreateChannel address generated = [net.tcp://win8-pc:6602//Microsoft.WindowsServerSolutions.Common.ProviderFramework.IProviderRegistry]
    [9820] 131024.193014.9212: ProviderFramework: Information: [0] : GetDuplexChannelFactory()
    [9820] 131024.193014.9232: ProviderFramework: Information: [0] : Contract: [Microsoft.WindowsServerSolutions.Common.ProviderFramework.IProviderRegistry]
    [9820] 131024.193014.9232: ProviderFramework: Information: [0] : Address: [net.tcp://win8-pc:6602//Microsoft.WindowsServerSolutions.Common.ProviderFramework.IProviderRegistry]
    [9820] 131024.193014.9232: ProviderFramework: Information: [0] : Binding: []
    [9820] 131024.193014.9232: ProviderFramework: Information: [0] : Identifier: []
    [9820] 131024.193014.9232: ProviderFramework: Information: [0] : ProviderEndpointBehavior.AllowedConnectionType: [AllowRemoteAccess]
    [9820] 131024.193014.9242: ProviderFramework: Information: [0] : ProviderEndpointBehavior.EndpointCredentialType: [None]
    [9820] 131024.193014.9242: ProviderFramework: Information: [0] : RequiredImpersonationLevel: [Identification]
    [9820] 131024.193014.9593: PfBinding: Information: [0] : Adding service dns identity [WIN8-PC] in proxy endpoint.
    [9820] 131024.193014.9693: ProviderFramework: Information: [0] : factory impersonation level is: [Identification]
    [9820] 131024.193015.0103: ProviderFramework: Information: [0] : ConnectAsync was NOT able to synchronously connect to the provider registry.
    [9820] 131024.193015.0222: ProviderFramework: Information: [0] : (current thread: 0x265c): PfSynchronizationContext not needed.
    [9820] 131024.193015.0232: ProviderFramework: Information: [0] : ProviderConnector: Querying for provider info: Microsoft.WindowsServerSolutions.DataProtection.PCBackup.BackupUtil.WcfContracts.IPCBackupClientProvider, False, 
    [144] 131024.193015.0472: ProviderFramework: Information: [0] : _OnConnected called.
    [144] 131024.193015.0483: ProviderFramework: Information: [0] : _CoreConnected is called.
    [9820] 131024.193015.0733: ProviderFramework: Information: [0] : (current thread: 0x265c): Installing new PfSynchronizationContext.
    [1528] 131024.193015.0973: ProviderFramework: Information: [0] : ProviderConnector: received ProviderInfo Microsoft.WindowsServerSolutions.DataProtection.PCBackup.BackupUtil.WcfContracts.IPCBackupClientProvider net.tcp://127.0.0.1:65532/Microsoft.WindowsServerSolutions.wssg_pc_backup_client/Microsoft.WindowsServerSolutions.DataProtection.PCBackup.BackupUtil.WcfContracts.IPCBackupClientProvider
    [1528] 131024.193015.0993: ProviderFramework: Information: [0] : ProviderConnector: Beginning connection attempt for Microsoft.WindowsServerSolutions.DataProtection.PCBackup.BackupUtil.WcfContracts.IPCBackupClientProvider
    [1528] 131024.193015.1053: ProviderFramework: Information: [0] : CreateWithCallback: Microsoft.WindowsServerSolutions.DataProtection.PCBackup.BackupUtil.WcfContracts.IPCBackupClientProvider
    [1528] 131024.193015.1053: ProviderFramework: Information: [0] : GetDuplexChannelFactory()
    [1528] 131024.193015.1053: ProviderFramework: Information: [0] : Contract: [Microsoft.WindowsServerSolutions.DataProtection.PCBackup.BackupUtil.WcfContracts.IPCBackupClientProvider]
    [1528] 131024.193015.1053: ProviderFramework: Information: [0] : Address: [net.tcp://127.0.0.1:65532/Microsoft.WindowsServerSolutions.wssg_pc_backup_client/Microsoft.WindowsServerSolutions.DataProtection.PCBackup.BackupUtil.WcfContracts.IPCBackupClientProvider]
    [1528] 131024.193015.1053: ProviderFramework: Information: [0] : Binding: [net.tcp]
    [1528] 131024.193015.1063: ProviderFramework: Information: [0] : Identifier: [Microsoft.WindowsServerSolutions.wssg_pc_backup_client]
    [1528] 131024.193015.1063: ProviderFramework: Information: [0] : ProviderEndpointBehavior.AllowedConnectionType: [AllowLocalAccessOnly]
    [1528] 131024.193015.1063: ProviderFramework: Information: [0] : ProviderEndpointBehavior.EndpointCredentialType: [User]
    [1528] 131024.193015.1063: ProviderFramework: Information: [0] : RequiredImpersonationLevel: [Impersonation]
    [1528] 131024.193015.1113: ProviderFramework: Information: [0] : factory impersonation level is: [Impersonation]
    [9820] 131024.193015.1123: BackupLaunchpad: BackupLaunchpadControl constructed
    [9820] 131024.193015.1213: BackupLaunchpad: BackupDisconnectedControl constructed
    [1528] 131024.193015.1223: ProviderFramework: Information: [0] : ProviderConnector: Received connection
    [9820] 131024.193015.1223: Backup: Trying to connect to provider Async.
    [9820] 131024.193015.1233: BackupLaunchpad: BackupLaunchpadProperties: constructed form
    [940] 131024.193015.1253: Backup: Waiting for connection with the provider.
    [1528] 131024.193015.1253: ProviderFramework: Information: [0] : ProviderConnector: Successfully connected for Microsoft.WindowsServerSolutions.DataProtection.PCBackup.BackupUtil.WcfContracts.IPCBackupClientProvider
    [1528] 131024.193015.1283: Backup: New connection detected. Try fetching all data
    [9820] 131024.193015.1443: BackupLaunchpad: Updated status to none
    [9820] 131024.193015.1443: BackupLaunchpad: BackupLaunchpadControl.RefreshStatus(): completed and showing status None and error None
    [9820] 131024.193015.1443: BackupLaunchpad: Synchronized state
    [1528] 131024.193015.1473: Backup: Connected to provider Successfully
    [9820] 131024.193015.1513: BackupLaunchpad: Updated status to failed
    [9820] 131024.193015.1523: BackupLaunchpad: BackupLaunchpadControl.RefreshStatus(): completed and showing status Failed and error Authentication
    [9820] 131024.193015.1523: BackupLaunchpad: Updated status to failed
    [9820] 131024.193015.1523: BackupLaunchpad: BackupLaunchpadControl.RefreshStatus(): completed and showing status Failed and error Authentication
    [9820] 131024.193015.1523: BackupLaunchpad: Updated status to failed
    [9820] 131024.193015.1523: BackupLaunchpad: BackupLaunchpadControl.RefreshStatus(): completed and showing status Failed and error Authentication
    [9820] 131024.193015.1533: BackupLaunchpad: Synchronized state
    [9820] 131024.193019.4216: BackupLaunchpad: Updated status to starting
    [9820] 131024.193020.9589: BackupLaunchpad: Updated status to starting
    [9820] 131024.193020.9599: BackupLaunchpad: Updated status to starting
    [144] 131024.193020.9909: Backup: Operation on provider-proxy failed.System.ServiceModel.FaultException`1[Microsoft.WindowsServerSolutions.DataProtection.PCBackup.BackupUtil.WcfContracts.PCBackupClientFault]: Der Ersteller dieses Fehlers hat keinen Grund angegeben. (Fehlerdetail ist gleich Microsoft.WindowsServerSolutions.DataProtection.PCBackup.BackupUtil.WcfContracts.PCBackupClientFault)., ServerNotReachable
    [9820] 131024.193021.0049: BackupLaunchpad: BackupLaunchpadControl.backupObjectModel_StartBackupAsyncCompletedEvent: Backup ended
    [9820] 131024.193021.0089: BackupLaunchpad: Updated status to failed
    [9820] 131024.193021.0089: BackupLaunchpad: BackupLaunchpadControl.RefreshStatus(): completed and showing status Failed and error Authentication
    [9820] 131024.193021.0089: BackupLaunchpad: BackupLaunchpadControl.backupObjectModel_StartBackupAsyncCompletedEvent: error reported
    [9820] 131024.193021.0119: BackupLaunchpad: Microsoft.WindowsServerSolutions.DataProtection.PCBackup.ObjectModel.PCBackupClientProviderException: Eine Ausnahme vom Typ "Microsoft.WindowsServerSolutions.DataProtection.PCBackup.ObjectModel.PCBackupClientProviderException" wurde ausgelöst.
    
    Server stack trace: 
       bei Microsoft.WindowsServerSolutions.DataProtection.PCBackup.ObjectModel.PCBackupClientManager.CallSyncOperation(Action`1 operation)
       bei System.Runtime.Remoting.Messaging.StackBuilderSink._PrivateProcessMessage(IntPtr md, Object[] args, Object server, Object[]& outArgs)
       bei System.Runtime.Remoting.Messaging.StackBuilderSink.AsyncProcessMessage(IMessage msg, IMessageSink replySink)
    
    Exception rethrown at [0]: 
       bei System.Runtime.Remoting.Proxies.RealProxy.EndInvokeHelper(Message reqMsg, Boolean bProxyCase)
       bei System.Runtime.Remoting.Proxies.RemotingProxy.Invoke(Object NotUsed, MessageData& msgData)
       bei Microsoft.WindowsServerSolutions.DataProtection.PCBackup.ObjectModel.PCBackupClientManager.StartBackupWorkerEventHandler.EndInvoke(IAsyncResult result)
       bei Microsoft.WindowsServerSolutions.DataProtection.PCBackup.ObjectModel.PCBackupClientManager.StartBackupAsyncDone(IAsyncResult ar)
    
    [9820] 131024.193022.3070: BackupLaunchpad: BackupLaunchpadControl.Commit(): completed
    [9820] 131024.193022.3070: BackupLaunchpad: BackupLaunchpadProperties.Commit(True): changes saved successfully
    [9820] 131024.193022.3370: BackupLaunchpad: BackupLaunchpadControl.backupObjectModel_SetWakeUpForBackupAsyncCompletedEvent: finished work
    [9820] 131024.193022.3370: BackupLaunchpad: Program.Main(): BackupLaunchpad ending
    

    and this is the backup log from the server

    [10/24/2013 19:30:03 1be0] Listener TcpEventCallback
    [10/24/2013 19:30:03 1be0] Listener TcpConditionCallback from 192.168.1.103
    [10/24/2013 19:30:03 5074] Session: ThreadMain for 00000000002AB110
    [10/24/2013 19:30:04 5074] BackupProtocol: disconnecting protocol: EncryptedStreamReader::Refill Got 0 bytes from recv
    [10/24/2013 19:30:04 5074] BackupProtocol: Got closed code 10
    [10/24/2013 19:30:04 5074] Session: ThreadMain end for 00000000002AB110
    [10/24/2013 19:30:32 1be0] Listener TcpEventCallback
    [10/24/2013 19:30:32 1be0] Listener TcpConditionCallback from 192.168.1.102
    [10/24/2013 19:30:32 5648] Session: ThreadMain for 00000000002AB110
    [10/24/2013 19:30:33 5648] BackupProtocol: disconnecting protocol: EncryptedStreamReader::Refill Got 0 bytes from recv
    [10/24/2013 19:30:33 5648] BackupProtocol: Got closed code 10
    [10/24/2013 19:30:33 5648] Session: ThreadMain end for 00000000002AB110
    [10/24/2013 19:30:33 4cc0] Listener TcpEventCallback
    [10/24/2013 19:30:33 4cc0] Listener TcpConditionCallback from 192.168.1.102
    [10/24/2013 19:30:33 5784] Session: ThreadMain for 00000000002AB110
    [10/24/2013 19:30:33 5784] BackupProtocol: disconnecting protocol: EncryptedStreamReader::Refill Got 0 bytes from recv
    [10/24/2013 19:30:33 5784] BackupProtocol: Got closed code 10
    [10/24/2013 19:30:33 5784] Session: ThreadMain end for 00000000002AB110
    

    Thursday, October 24, 2013 5:33 PM