When you run the exact same PolyBase query multiple times in SQL Server 2019, you may notice that every other query execution will fail with the following error message:
Msg 111208, Level 16, State 1, Line LineNumber
111208;An internal error occurred that prevents further processing of this command: Authentication cancelled.
Msg 596, Level 21, State 1, Line LineNumber
Cannot continue the execution because the session is in the kill state.
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: