On our TFS source control server, a lot of source files are checked out by people, which are not employed any more.
Is there a central way where I can undo check out on all files in TFS?
I’m not even sure that they exists in Active Directory anymore.
Best thing to do is to delete their workspace using with the command line tool (tf.exe) or the TFS Sidekicks from Attrice.
See the following blog post I did on the topic when it happened to me, and I detailed the command line version:
http://www.woodwardweb.com/vsts/unlocking_files.html