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VEEM 6.5.0.109 Backup failure - 2008 DC.

VEEAM error -

Unable to release guest. Unfreeze error. (backup job failed. Cannot create a shadow copy of the volumes containing writers data. A VSS critical writer has failed. Writer name: NTDS (class id xxxxxxxxxxx) Writer state (VSS_WS_failed_at_post_snapshot. Error code (0X800423F4). Error: unfreeze error (backup job failed. Cannot create a shadow copy of the volumes containing written data. A VSS critical writer has failed. Written name (NTDS) VSS_WS_FAILED_AT_POST_SNAPSHOT_ERROR Code (0X800423F4)

Tried the following:

I rebooted the server.

Ran vssadmin list writers - VSS NTDS was stable and was not in an error state.

Ran job but it failed with the same error.

Ran vssadmin list writers - the VSS NTDS was in error.

Ran diskpart  - automount - the aotomatic mounting of the drives is enabled.

Deleted .bak files in the registry in the following reg area:  HKLM\Software\Microsoft\Windows NT\CurrentVersion\ProfileList

Rebooted the server.

Ran vssadmin list writers - NTDS VSS was stable and was not in an error state.

Re-ran job and it failed with the same error

Any assistance would be great.
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VMware and Virtualization Consultant
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Expert of the Year 2017
Commented:
Can you try and test the following on the virtual machine...

Take a snapshot, and make sure the Quiesce option is ticked and Snapshot Memory is unticked.

Wait 120 seconds and delete the snapshot...

Any errors ?

Author

Commented:
Cheers for the reply  but I re-ran the job and it has now completed!
Philip ElderTechnical Architect - HA/Compute/Storage
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Commented:
Dave,

Please update Veeam. It's pretty far behind.