We have recently upgraded our TFS 2010 server to TFS 11 RC. The upgrade process was smooth and painless. But (there is always a "but"), when I tried to access new TFS Web Access (which is awesome, by the way), I get "TF400508: The current process settings are either missing or not valid…" error. This error is only happening with old "upgraded" projects and we do not see this error if I create a new project in TFS 11. So, it looks like the problem lies within the older template. To resolve the issue, I had to use updateProject file from Microsoft to update an Agile, Scrum or CMMI team project from Team Foundation Server 2010 to Team Foundation Server 11.
To run the updateProject batch file:
- Launch Visual Studio 12 command prompt
- Run updateProject batch file as follows:
updateProject CollectionURL ProjectName TemplateName
For detailed instruction see http://msdn.microsoft.com/en-us/library/ff432837(VS.110).aspx