Error: VSSControl: Failed to prepare guest for freeze

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Error: VSSControl: Failed to prepare guest for freeze

Veeam Logoby mustafa.jarrar » Sun Jan 22, 2017 11:09 am

dears,
I am trying to take a backup for Microsoft exchange 2013 it was working but suddenly now not working and this error comes
Error: VSSControl: Failed to prepare guest for freeze, wait timeout 900 sec
any feedback please :(

regards
mustafa.jarrar
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Re: Error: VSSControl: Failed to prepare guest for freeze

Veeam Logoby fraack » Sun Jan 22, 2017 2:00 pm 1 person likes this post

Hi Mustafa

you can try to increase the VSS timeout values in your DAG.

"Increase the DAG heartbeat time to avoid cluster failover (no reboot or service restart needed, they are online after you press enter).
On a command line (with admin rights)
cluster /prop SameSubnetThreshold=20:DWORD
cluster /prop SameSubnetDelay=2000:DWORD
cluster /prop CrossSubnetThreshold=20:DWORD
cluster /prop CrossSubnetDelay=4000:DWORD
cluster /prop RouteHistoryLength=40:DWORD (need to be double the amount of CrossSubnetTrashhold)"


Please see the full workaround written by Andreas Neufert from Veeam here: http://andyandthevms.com/tag/exchange-dag/

Hope this will help for your environment

Florian
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Re: Error: VSSControl: Failed to prepare guest for freeze

Veeam Logoby kilobits » Mon Jan 23, 2017 3:33 pm

I've also had some success restarting VSS on client and re-running the job.
kilobits
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Re: Error: VSSControl: Failed to prepare guest for freeze

Veeam Logoby WRS2200 » Tue Jan 24, 2017 12:06 am

I too have had success from restarting VSS on the client machine and re-running the job. You can also list VSS writers on client machine to make sure that none of them are failed.
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