SSRS Query execution failed for dataset

Question

Have just deployed my Project on to my reporting Server.

I have multiple datasets which are referencing views which exist on the db on that server.

When I tr

Answer 1

I also had a very similar issue with a very similar error message. My issue was that the database could not be connected to. In our case, we have mirrored databases and the connection string did not specify the Failover Partner. So when the database couldn't connect, it never went to the mirror and was throwing this error. Once I specified the Failover Partner in the connection string for my datasource, it resolved the issue.