SQL Server

Could not load type Microsoft.Mashup.Engine.Interface.MashupFileExtension

If you will try to load new data from data source in SSAS tabular project:

You can see following error message:

There are few options how to solve this issue: https://github.com/Microsoft/DataConnectors/issues/2

In our case it really helped to update SSDT using Visual Studion Tools => Extensions and Updates:

After update was installed and Visual Studio restarted everything works fine.

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