FIX: PolyBase queries can now be run with EXECUTE AS impersonation context in SQL Server 2019

Symptoms

When you run PolyBase queries that have an EXECUTE AS statement in Microsoft SQL Server 2019, you notice that the PolyBase queries time out, or you receive an error message that resembles the following:


Msg 11001, Level 16, State 1, Line LineNumber

TCP Provider: No such host is known.

 

Msg 15274, Level 16, State 1, Line LineNumber

Access to the remote server is denied because the current security context is not trusted.


Status

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

Resolution

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:

References

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

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