We set up a POC server to test a performance bug in a particular environment. This was done by copying backups of the ReportServer/Temp and our business RDB to a POC server and restoring them. Our reports are now generating the error "The execution failed for the shared dataset...Cannot impersonate user for data source..." etc. However, when I manage the data source the credentials are there and I can successfully test the connection. Any ideas?
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