SQL Writer Service doesn’t handle database snapshots (for example, "CREATE DATABASE DataSnapName AS SNAPSHOT") in non-component backup code path in SQL Server 2016, 2017 or 2019. You may notice the following error log entry when you run BACKUP DATABASE against the snapshots during a Volume Shadow Copy Service (VSS) backup operation.

It requires you to kill the SQL Writer Service to unblock the situation. Among SPID blocked by this head blocker, there will often be a DBSTARTUP SPID (alwayson Secondary DB redo). Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.

After the installation, the version of the sqlwriter.exe file is 11.0.5058.0 that is SP2 version. However, it should be 11.0.5548.0 that is SP2 CU2 version. The issue also occur in SQL Server 2014.

Fixes an issue in which event ID 24581 is logged when some VSS backup operations are running at the same time in SQL Server 2008 R2, SQL Server 2012, or SQL Server 2014. This issue occurs when the auto-recovery option is enabled.

Run SQLServer2012-KB2983175-x64.exe to install cumulative update 2 for SQL Server 2012 SP2. Prepare the original installation media. Status. Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.

VSS writer SQLServerWriter failed with error 0x800423f4 during After DoSnapshotSet phase on the source machine. The option to request non-component backup belongs to the VSS requestor application and is usually not visible to the user. An example of application requesting such backups is Azure VM backup agent.

Data can be sent over a network to an affected Microsoft SQL Server instance that might cause code to run against the SQL Server process if a certain extended event is enabled. To learn more about the vulnerability, see CVE-2021-1636. The SQL Server components are updated to the following builds in this security update.

Microsoft has released security bulletin MS09-004. To view the complete security bulletin, visit one of the following Microsoft Web sites: The following table lists the known issues with this security update.

FIX: "The MDX function failed because the coordinate for the 'AttributeName' attribute contains a set." message when you run an MDX query in SQL Server 2012 or in SQL Server 2008 R2. We recommend that you test hotfixes before you deploy them in a production environment.

We recommend that you upgrade your SQL Server to the latest SQL Server 2012 service pack. SQL Server failover cluster rolling update and service pack process. Install the service pack on the passive node. Install the service pack on the active node, and this step requests service restart.