A VSS critical writer has failed: SqlServerWriter

Backup agent for Microsoft Windows servers and workstations (formerly Veeam Endpoint Backup FREE)

Re: A VSS critical writer has failed: SqlServerWriter

Veeam Logoby Dima P. » Wed Aug 17, 2016 9:52 pm

Christian,

Any chance you opened a support case?
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Re: A VSS critical writer has failed: SqlServerWriter

Veeam Logoby AlexLeadingEdge » Fri Aug 19, 2016 2:53 am 1 person likes this post

I uninstalled ACT; I wish I were kidding but it was a constant headache. I didn't have the time or the inclination to figure it out, the trial period had expired and it couldn't do everything we wanted it to do in the trial period time, and ACT were unwilling to give us an extension to the trial time. I then turned off the Sql Server VSS Writer under Services. VEEAM seems to need it running (without ACT) or turned off (maybe it turns it back on using its own conditions?), no idea why this works. A simple reboot didn't seem to fix the error.

I also found that ACT blocked certain mapped drive folders from opening, giving me an eternal "Working on it...". Uninstalling ACT fixed that problem too.
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Re: A VSS critical writer has failed: SqlServerWriter

Veeam Logoby Dima P. » Sat Aug 20, 2016 1:33 pm

Out of curiosity what SQL version this ACT uses? Does it have any other components installed with SQL?
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Re: A VSS critical writer has failed: SqlServerWriter

Veeam Logoby AlexLeadingEdge » Mon Aug 22, 2016 11:19 pm

As I have uninstalled it I am not sure. Just going by the ACT! website:

Act! Premium uses SQL Server® 2014 Express or your existing installation of SQL Server® 2008 R2.
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Re: A VSS critical writer has failed: SqlServerWriter

Veeam Logoby Caveman » Fri Oct 28, 2016 3:52 pm

Any update on this?
We are experiencing the same issue, however on our exchange server. ATM they are stating its a Microsoft error with the Hyper-V Vss writer.

case 01895883
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Re: A VSS critical writer has failed: SqlServerWriter

Veeam Logoby Dima P. » Fri Oct 28, 2016 5:41 pm

Hi Caveman,

Are you using ACT! software too?
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Re: A VSS critical writer has failed: SqlServerWriter

Veeam Logoby BuckTussa » Wed Jan 25, 2017 12:48 am

ACT! software is total garbage. It is a [censored] and is a pain to install. Thanks for the SQL VSS writer solution.
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Re: A VSS critical writer has failed: SqlServerWriter

Veeam Logoby Dima P. » Wed Jan 25, 2017 10:08 pm

Bruce,

Share you pain – our support team has to fix issues cause by this tool from time to time. Glad you are up and running now.
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Re: A VSS critical writer has failed: SqlServerWriter

Veeam Logoby Bellsys2765 » Thu Apr 06, 2017 2:16 am

I know this is a old post but I recently ran in to the same issue with ACT, I was able to find this simple fix at the ACT forum Thanks to Andyman49 :D
https://community.act.com/t5/Act/Instal ... 748/page/2
The problem is with permission set for ACT SQL instance needs to be change to Local Service from Local System

Control Panel

Administrative Tools

Computer Management

Services and Applications

SQL Server Configuration Manager

SQL Server Services

SQL Server(ACT7)



Change Log On from Built-in account: Local System to Built-in account: Local Service
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Re: A VSS critical writer has failed: SqlServerWriter

Veeam Logoby brewcrew » Mon May 22, 2017 8:17 pm

Thank you for posting this here! I was having this problem since we setup a new ACT server on our VMWare host. The old ACT server backed up fine, but the new one would error out with this error. Changing the service did the trick for us!
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Re: A VSS critical writer has failed: SqlServerWriter

Veeam Logoby LeifGunnar » Mon Jun 12, 2017 8:51 am

Hi AlexLeadingEdge & cmeis

Did you manage to resolv this issu regerading Veeam Endpoint Backup and the ACT software ??
Have a issue with one window 7 WS with ACT installed.

Thanks
Leif Gunnar
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Re: A VSS critical writer has failed: SqlServerWriter

Veeam Logoby Mike Resseler » Tue Jun 13, 2017 5:28 am

Hi Leif,
The solution from BellSys2756 seems to work fine. If not, you can always contact our support department. (In that case, post the case ID and follow-up here) as they have fixed these already a few times (see post of Dima)

Cheers
Mike
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