I often advocate using virtual machines and, in particular, Brian Keller’s VM for getting up to speed on our latest TFS changes. While I’m not sure about your usage, I often run these VM’s as long as possible but sometimes run up against the end of the trial period for TFS. I ran across this article from Brian Harry he wrote a while back about extending the trial period and thought I would share.
For TFS 2010, 2012, and later the procedure can be found here:
For TFS 2005 and 2008 the process for extending the trial period can be found here: