I have this problem and did not find in the site a case like mine.
Here is the thing.
I created a TFS 2008 with the scrum template (Conchango). It was a clean install (a fresh OS, a fresh SQL Server, a fresh machine, etc…). So everything worked like a charm. I created 3 Scrum repositories, assigned permissions, uploaded files and so on… 3 teams started working on them, and everything was super! Up to this point the server only had 3 scrum repositories and nothing else.
Then, I had to create a new repository, but with the CMMi template (the one provided with TFS). Again everything works (the Sharepoint site, the source control, documents..) … BUT…. Reports stopped refreshing!!!
Does anybody know how to fix it? Any help will be really appreciated
Should you need more info please let me know
Found someone with the same problem, reports do stop working after adding CMMI project :)
The following link has an explaination of how to fix it: