Hi ,
I need some clarification on this issue.
Are we facing the issue with reports after installation of UR12 or Ur13 ?
are you facing the issue for all the reports, including Out of box . let's take User Summary as an example here
are you able to run the User Summary report from the report Server directly?
if not did you get a chance to look into the Report Server logs for the detailed error message
Regards,
Mohammad