(This is a post migrated from Dotnetjunkies )
I have a virtual machine image of TFS in workgroup mode that I want to try out some project settings on before promoting to the production TFS server I have on the domain. However, it seems that attaching Visual Studio Team Explorer to this machine is not possible by directly connecting to its IP Address.
What you can do is modify your hosts file in C:\WINDOWS\system32\drivers\etc (under Windows XP) and associate a name with the IP Address.
You should now find you can connect using this name.