Can you change the Process Template on an existing Team Project?

 
Once a Team Project has been created, the Process Template cannot be changed.

While we do not offer formal support, if you need to change the Process Template, you may want to consider the following solution as a workaround:
  • Create a new Team Project with the Process Template that you wish to use.
  • Use the TFS Integration Platform/Tools to migrate data from the old project to the new Team Project.