Unfreeze error V9

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Unfreeze error V9

Veeam Logoby jamerson » Mon Feb 08, 2016 3:05 pm

Hi guys,
after update to V9, one Win 10 Machine keeps having the below error.
Code: Select all
Unable to release guest. Error: Unfreeze error: [Backup job failed. Cannot create a shadow copy of the volumes containing writer's data. A VSS critical writer has failed. Writer name: [SqlServerWriter]. Class ID: [{a65faa63-5ea8-4ebc-9dbd-a0c4db26912a}]. Instance ID: [{dde7cd31-7767-49db-a0c9-e69e23b8d0df}]. Writer's state: [VSS_WS_FAILED_AT_PREPARE_SNAPSHOT]. Error code: [0x800423f0].]
Error: Unfreeze error: [Backup job failed. Cannot create a shadow copy of the volumes containing writer's data. A VSS critical writer has failed. Writer name: [SqlServerWriter]. Class ID: [{a65faa63-5ea8-4ebc-9dbd-a0c4db26912a}]. Instance ID: [{dde7cd31-7767-49db-a0c9-e69e23b8d0df}]. Writer's state: [VSS_WS_FAILED_AT_PREPARE_SNAPSHOT]. Error code: [0x800423f0].]


the only thing that does works ,is to reboot the VM.
can you please help me understand why this keeps happening ?
jamerson
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Re: Unfreeze error V9

Veeam Logoby PTide » Mon Feb 08, 2016 3:13 pm

Hi,

Are there any related messages in the guest's event log?

Thank you.
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Re: Unfreeze error V9

Veeam Logoby Vitaliy S. » Mon Feb 08, 2016 3:20 pm

Check out VSS writers state, most likely you will find some writers in a failed state. Aslo, please include your case ID (as it is advised by our forum rules), otherwise this topic will be removed by a moderator.
Vitaliy S.
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Re: Unfreeze error V9

Veeam Logoby jamerson » Mon Feb 08, 2016 3:23 pm

I see on the EVENTVIEW on the client the next ID 8193 VSS and CAPI2513.

https://technet.microsoft.com/en-us/lib ... 21(v=ws.10).aspx
https://technet.microsoft.com/en-us/lib ... 96(v=ws.10).aspx

followed the links on the Microsoft side but still the same issue after one week.
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Re: Unfreeze error V9

Veeam Logoby PTide » Mon Feb 08, 2016 3:28 pm

Is your Windows 10 machine somehow taking part in AlwaysOn availablility group?
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Re: Unfreeze error V9

Veeam Logoby jamerson » Mon Feb 08, 2016 3:30 pm

PTide wrote:Is your Windows 10 machine somehow taking part in AlwaysOn availablility group?


what do you mean with Always on Availability group ? its a member of a AD.
I managed to find the error I believe , VSS shadow copy services was manual and not started.
have to start it manually.
I've changed the start up type to automatically and started the server.
I've run the job once again but the same error .
jamerson
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Re: Unfreeze error V9

Veeam Logoby PTide » Mon Feb 08, 2016 4:01 pm

what do you mean with Always on Availability group? its a member of a AD.
Just had an assumption that your problem could be MSSQL AlwaysOn related. Nevermind.

I managed to find the error I believe , VSS shadow copy services was manual and not started.
have to start it manually.
I've changed the start up type to automatically and started the server.
I've run the job once again but the same error .
As Vitaly's suggested - please check writers' state and post your case ID.

Thank you.
PTide
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Re: Unfreeze error V9

Veeam Logoby Vitaliy S. » Mon Feb 08, 2016 5:14 pm

jamerson wrote:I managed to find the error I believe , VSS shadow copy services was manual and not started.

VSS shadow copy service does not need to be configured to start automatically for application-aware image processing.
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Re: Unfreeze error V9

Veeam Logoby jamerson » Tue Feb 09, 2016 12:41 pm

Anyway thank you for your answer.
none of your solutions seems to work.
the only solution I found is reboot the VM.
created a schedule to reboot before the backup until I find a real solution.
jamerson
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Re: Unfreeze error V9

Veeam Logoby PTide » Tue Feb 09, 2016 1:42 pm 1 person likes this post

none of your solutions seems to work.
That's exactly the reason why we always insist on opening a case with support team - troubleshooting on the forum is not an easy thing to do, especially without seeing your logs. Please open a case with support team and post your case ID in this topic.

Thank you.
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