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Server 2012 Backup Failing

Hi there,

I have a client who has a server running Windows Server 2012 R2 Standard with Hyper-V running.
Whenever it tries to run a backup it fails with the two following errors:-

VSS writers inside virtual machine 'servername' failed to perform BackupComplete to its shadow copy (VSS snapshot) set: Catastrophic failure (0x8000FFFF). (Virtual machine ID xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx)

And

The backup operation that started at '‎2015‎-‎05‎-‎12T19:00:35.827000000Z' has failed because the Volume Shadow Copy Service operation to create a shadow copy of the volumes being backed up failed with following error code '0x807800A1'. Please review the event details for a solution, and then rerun the backup operation once the issue is resolved.

So far I have tried re-registering the VSS dlls, setting the Volume Shadow Copy Service to Automatic and ran an SFC scan which came back ok.

Any ideas? Your help would be much appreciated!

SOLUTION

Steve Whitcher

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Cliff Galiher

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jasonuocs

ASKER

Hi Guys,

Thanks for that info. How do I check if the integration service is up to date?

SOLUTION

Steve Whitcher

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jasonuocs

ASKER

Thanks guys for your help. You certainly pointed me in the right direction. It turns out after doing 93 MS Updates and restarting the failing Guest VM along with bigger Backup HDDs, the problem was solved.