I cannot get this error resolve either for myself or any users, and I'm actually part of the Admin group! Furthermore, a user with whom I'm tring allow to view this report keeps getting prompted for their windows username and password. I thought that since this datasource was set to Windows Authentification that it would just pass it through?
I'm pulling my hair out at this point:
Also As far as I know, I've given proper permissions to the right logins and right users on my SQL Databases and related stored procs that the datasets (not datasource) run
An error has occurred during report processing.
Cannot create a connection to data source 'my datasourcename'.
For more information about this error navigate to the report server on the local server machine, or enable remote errors