We recently switched over to our TFS server in our other data center. Since then I have not been able to connect to the TFS server from IDEA. Eclipse and Visual Studio are still connecting correctly, which leads me to believe there is a bug in the TFS plugin. I am currently working with IDEA 8.1.4 build #9952.
I have seen other threads on this issue, but they haven't been active for sometime. However, I'm hoping that in the meantime that you all have created a patch to fix the issue
FYI, my company is currently thinking about purchasing IDEA licenses for the java developers (I am currently the only user), so fixing this issue is crucial to their decision, and I will be very sad if I have to give up IDEA and use Eclipse