In TFS Server 2010, I tried to add new user in the below path of Team Foundation Server Administrator Console
Application Tier-> Administration Console Users -> Add link
In Add user dialog, I couldn’t able to find other users which are in the same LAN.
I’m using Windows Vista. All machines are in same workgroup
Unless you’re actually on a domain with an Active Directory to control and “host” your users, you won’t find any of them automatically. Users on computers in workgroups are local to those computers and have to be entered manually.
One way to manage this is to create accounts on the TFS Server server and then use those accounts as credentials when connecting from the workstations.
http://msdn.microsoft.com/en-us/library/ms252507.aspx is an article which describes working with TFS in a workgroup environment more closely and in detail.
The question How to add new users to TFS 2010 (and answers) should also be some help in how to add users on your server.
Basically,
and add your users. Then,
(From the question mentioned above. You should go there and upvote their answers for being good and helpful, too, if this helps you – specifically Bizz’ and Kyberias’ answers that I quoted here.)