In our case it was simply a missing SQL Server 2019 version of a custom connection we have in our SSIS project. After installing the 2019 version everything worked fine.

I'm...

• This reply was modified 4 years ago by  fbeekvel.

Did anyone ever find a solution for this?

I just changed the TargetServerVersion from SQL Server 2016 to SQL Server 2019 (using the SQL Server Integration Services Extension v3.10 in Visual...