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When you enable C2 audit mode in SQL Server 2017, you may notice that the SQL Server may shut down after it is restarted. 


This issue occurs because C2 audit mode generates a duplicate file name when it tries to create an audit log file. 

More Information

This fix adds an additional uniqueness qualifier to the audittrace name based on the rdtsc counter.


Previous name: audittrace20180123102129_61.trc

New Name: audittrace2018012310212901234567890123456789_61.trc


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

       Cumulative update 4 for SQL Server 2017

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:

Latest cumulative update for SQL Server 2017


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


Learn about the terminologythat Microsoft uses to describe software updates.

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