Server Error: Unable to perform application-aware processing

[mcp33]

Hi
We are expericeing the following issues when backing up Exchange Server 2013
Server Error: Unable to perform application-aware processing because connection to the guest could not be established
Veeam backup server Windows Server 2012R2 Exchange Server 2013 Windows Server 2012R2 , Exchange version 21
Guest Credentials test passes

I can map a drive form the Veeam server to the exchange server \\192.168.0.1.2\c$ without any problems. The veeam backups seem to be very hit and miss at the moment.
From the log file

Code: Select all

[04.07.2018 10:30:29]      Info             Copying file from [C:\Windows\TEMP\ifd7AB.tmp] to [\\192.168.12\ADMIN$\VeeamVssSupport\VeeamAgentConfig.xml].
[04.07.2018 10:30:30]      Info             Getting a binding handle for a RPC endpoint with the RPC interface specified. RPC interface UID: [{fa8573fc-2445-4ef5-82f1-30e34e7a07c7}]. Version major: [1]. Version minor: [0].Failed.
[04.07.2018 10:30:30]      Warning       Cannot get a binding handle for a RPC endpoint with the RPC interface ID specified. RPC interface UID: [{fa8573fc-2445-4ef5-82f1-30e34e7a07c7}]. Version major: [1]. Version minor: [0]
04.07.2018 10:30:30]      Warning             Cannot get next element from the remote endpoint map.
[04.07.2018 10:30:30]      Warning             RPC error:The remote procedure call failed.
[04.07.2018 10:30:30]      Warning              Code: 1726
[04.07.2018 10:30:51] <17> Info     [VssGAConn(exchange.local)] Cannot connect to guest agent. System.Runtime.InteropServices.COMException (0x800706BA): Failed to check whether snapshot is in progress (network mode).
[04.07.2018 10:30:51] <17> Info     RPC function call failed. Function name: [IsSnapshotInProgress]. Target machine: [192.168.1.2].
[04.07.2018 10:30:51] <17> Info     RPC error:The RPC server is unavailable.
[04.07.2018 10:30:51] <17> Info      Code: 1722
[04.07.2018 10:30:51] <17> Info     at VeeamGuestHelperCtrlLib.IVeeamVssViOnlineSnapMethods.IsSnapshotInProgress(Guid& pJobUID, String& pJobName)
[04.07.2018 10:30:51] <17> Info      at Veeam.Backup.VssProvider.CVssLocalConnection.InstallAndTest(IVeeamGAConnection connection, String vmDisplayName, EGuestOsType guestOsType, Boolean waitUninstallAfterRestore)
[04.07.2018 10:30:51]      Info             Impersonating network logon session.. Ok.
[04.07.2018 10:30:54] <17> Error    [HvVssConnectionCreator] Failed to create VssConnection
[04.07.2018 10:30:54] <17> Error    Failed to check whether snapshot is in progress (network mode).
[04.07.2018 10:30:54] <17> Error    RPC function call failed. Function name: [IsSnapshotInProgress]. Target machine: [192.168.12].
[04.07.2018 10:30:54] <17> Error    RPC error:The RPC server is unavailable.
[04.07.2018 10:30:54] <17> Error     Code: 1722 (System.Runtime.InteropServices.COMException)
[04.07.2018 10:30:54] <17> Error       at VeeamGuestHelperCtrlLib.IVeeamVssViOnlineSnapMethods.IsSnapshotInProgress(Guid& pJobUID, String& pJobName)
[04.07.2018 10:30:54] <17> Error       at Veeam.Backup.VssProvider.CVssLocalConnection.InstallAndTest(IVeeamGAConnection connection, String vmDisplayName, EGuestOsType guestOsType, Boolean 
[04.07.2018 10:30:56] <17> Error       at Veeam.Backup.Core.CHvVmSource.CreateSnapshot(CHvSnapshotMngr snapshotMngr, CHvSnapshotAttemptCtx snapshotCtx)
[04.07.2018 10:30:56] <17> Error       at Veeam.Backup.Core.CHvVmSource.TryCreateSnapshot(CHvSnapshotMngr snapshotMngr)
[04.07.2018 10:30:56] <17> Error       at Veeam.Backup.Core.CHvVmSource.PrepareResource()
[04.07.2018 10:30:56] <17> Error       at Veeam.Backup.Core.CHvVmSource.PrepareResource(ITasksScheduler tasksScheduler, ITask task)
[04.07.2018 10:30:56] <17> Error       at Veeam.Backup.Core.CHvBackupJobPerformer.CreateSource(CHvVmTask task, CBackupTaskSession taskSess)
[04.07.2018 10:30:56] <17> Error       at Veeam.Backup.Core.CHvBackupJobPerformer.ExecuteTask(CHvVmTask task)
[04.07.2018 10:30:56] <17> Error    Unable to perform application-aware processing because connection to the guest could not be established (System.Exception)
[04.07.2018 10:30:56] <17> Error       at Veeam.Backup.Core.ResourceScheduler.CHvWindowsVmGuest.CheckGuestConnectionAndFeatureRequirements()
[04.07.2018 10:30:56] <17> Error       at Veeam.Backup.Core.ResourceScheduler.CHvWindowsVmGuest..ctor(CHvVmGuestOptions options, CHvVmSnapshotData vmSnapshotData, CHvVssConnectionCreator vssConnCreator, CBackup backup)

Any idea why this is now failed, we do have a seconds NIC in the server, but cannot see why this is hit and miss when backing up the Hyper-VM. I beleive that the firewall ports are all fine.

[mcp33]

Thank you for contacting Veeam Customer Support. Your support case number is 03086587.

[systems]

We are also getting this error for newly added servers..what is the solution...

[migeauxy]

Hello

We have the same issue here
The only precision is that it seems that it is failing when databases are active
Our configuration is a DAG, and if all databases are passive on one node, the backup runs with no issue.

Please advice and give a feedback on Veeam case....

Thanks

[foggy]

Hi guys, the case was closed due to no response from the customer, please open your own cases for closer investigation. Thanks!