I'm installing PolyBase on the latest SQL Server 2019.

During the installation I'm incurring in this error: https://www.youtube.com/watch?v=Oxd8yeiBfig (sorry for the video quality)

The proposed new database owner is already a user or aliased in the database. 
Changed database context to 'DWQueue'.

Yes, this error has already been addressed here:

SQL Server 2019 Polybase installation error "The proposed new database owner is already a user or aliased in the database"

This means to me that Administrators cannot install PolyBase.

Is there any way out without dropping my Administrator?

1 Answer 1


Only administrators can install features to the SQL Server. All the information should be in the summary_xxxx.txt and the other log files located in

c:\program files\microsoft sql server\150\setup bootstrap\log\20220617_120543\

but the workaround in the other post holds. Wait for the error to pop up. Connect to the SQL Server using SSMS and drop your user from the DWQueue database


Go back to the setup and click retry and then do the same for the DWConfiguration and DWDiagnostics databases if the same error pops up there.

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