Event ID: 34113 Source: Backup Exec

Event: 34113
Agent Time: 4xxx
Event Time: xxx
Source: Backup Exec
Category: None
Username: N/A
Computer: xxx
Description: Backup Exec Alert: Job Failed
(Server: "xxx") (Job: "xxx") xxx -- The job failed with the following error: A failure occurred querying the Writer status.
For more information, click the following link:
http://eventlookup.veritas.com/eventlookup/EventLookup.jhtml
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A VSS error has occurred when backing up Exchange 2003/2007 Databases. Check the VSS writer status.

Open a command prompt on the Exchange server
enter the following command: VSSADMIN LIST WRITERS

If the Last Error states:
- Retryable Error- Reboot the server and then retry the backup operation. Rebooting often resolves VSS Application Writer failure. After rebooting, check VSS writer status again.

- Non-Retryable Error- review the Event Viewer Application Log for information regarding the cause and possible solution to this issue.


IF VSS Writer Status returns:
State: [1] Stable
Last error: No error
Writer Status is stable and you should not receive this error again.

As a LAST resort, reapply the latest Microsoft Service Pack to Windows 2003:
http://support.microsoft.com/kb/889100/

Sources:
http://seer.support.veritas.com/docs/278212.htm

http://support.veritas.com/docs/312068

http://support.microsoft.com/kb/889100/