How can I add non windows users to my team foundation server 2012 express edition? We work with an outsourcing company and we would like a set up where TFS express edition is ac
On premise TFS only supports Windows auth (either local or domain).
I would suggest you look at using Team Foundation Service (TFS in the cloud) for this project. It's currently free and uses Microsoft live accounts instead.
Not sure about 2012, but previous versions of TFS could be managed on a Workgroup. You would need to create local accounts for all your users. And even domain users would need to authenticate each time.
http://msdn.microsoft.com/en-us/library/ms252507.aspx