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BackupExec 2010 R2 - VM Exchange 2010 error on backupjob

Created: 27 Jun 2011 • Updated: 15 Aug 2011 | 4 comments
ThaveshinP's picture
This issue has been solved. See solution.


Running BackupExec 2010 R2 on physical server. Exchange 2010 running as virtual machine on Microsoft Hyper-V. I get this message
continously. I have checked and certain times the VSS writer is working, but then I have to reboot the server to get it working and then the backup job runs without this error- but cant afford to reboot the exchange server everyday. What can I do to get this working? What services do I need to check/start
on the Host Hyper-V server as well as Exchange 2010 server?

e0001904 - A failure occurred querying the Writer status.  Writer Name: Exchange Server, Writer ID: {76FE1AC4-15F7-4BCD-987E-8E1ACB462FB7}, Last error: The VSS Writer failed, but the operation can be retried (0x800423f3), State: Failed during prepare snapshot operat
For additional information regarding this error refer to link V-79-57344-6404

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Dev T's picture


Re-Register the VSS Writers

similar issue faced, re-registering writers resolved

Hope this helps...

Its a best practice to have a "Support Contract" with Symantec...

ThaveshinP's picture

Does this have to be done on the exchange and hyper-v host server or only exchange?

CraigV's picture'd do this on the machine specifically giving you this error...

Alternative ways to access Backup Exec Technical Support:

ThaveshinP's picture

Thanks, willl try it out on the exchange server giving the error.