Assume that you use Microsoft SQL Server 2016. When the Trace Flag (TF) 3924 is enabled to clean the orphaned Distributed Transaction Coordinator (DTC) transactions in sqlmin!XactMgr::CleanOrphanedXacts, then an Access violation (AV) occurs.

Note A new fix is available in the following KB 4519668 to fix the Access Violation issue. Please apply the latest fix available in KB 4519668 to address this issue rather than the fix available in this KB 4511816.


Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.


This issue is fixed in the following cumulative update for SQL Server:

About cumulative updates for SQL Server:

Each new cumulative update for SQL Server contains all the hotfixes and all the security fixes that were included with the previous cumulative update. Check out the latest cumulative updates for SQL Server:


Learn about the terminology that Microsoft uses to describe software updates.

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