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Symantec Backup Exec 15 Failing

I'm getting this error most of the time but sometimes, the same backup job is successful also even without doing anything.  Running on Windows 2012 R2

 

V-79-57344-34108 - An unexpected error occurred when cleaning up snapshot volumes. Confirm that all ...
2 Replies

Go to the VM and see whether

Go to the VM and see whether you can manually create and delete snapshots.  Make sure that you have sufficient space on your disk for snapshots.

Also, see this document

http://www.veritas.com/docs/000007156

Re: Symantec Backup Exec 15 Failing

Assuming this is  traditional agent backup  and not a VM backup check the Windows Event logs inside the server being backed up for VSS errors at the time of the backup - if there are any research those errors