I seem to be having an intermittent issue connecting to Team Foundation Server. At any one time, I may have a few systems that cannot connect, but others that connect ok.

The error I see in Visual Studio is "TF31002: Unable to connect to this Team Foundation Server Url: http://vstfs:8080."

The server is online. My password is not expired or incorrect.

I tried connecting to http://vstfs:8080/services/v1.0/ServerStatus.asmx as I saw suggested on another topic related to this. On one of my systems this works, but on the other one I get the following response.

The page cannot be displayed

Tom McAnnally

Are there any messages in the event log on the application tier? Cheers, Adam This posting is provided "AS IS" with no warranties, and confers no rights.

Adam Singer MSFT

Hi, We had a similar problem. We would lose contact with the server using its DNS name, this was confirmed by pinging the box when we lost our connection in Team Explorer. I added an entry in my hosts file for the box on the development PC and it seems to have cleared up. Wes

Wes MacDonald

Tom, Is it possible that you have beta versions of the Team Foundation Client/VSTS on the machines that can't connect? That error is the one you get when there is a version mismatch between the client and the server. Regards, William Bartholomew

William Bartholomew

I am sure that this error could be caused by many things. I did discover a system that had a version mismatch in the client software. In our case the problem was that a firewall setting was changed unknown to me, and traffic to the server was being blocked. The systems that could connect were on the same side of the firewall connection as the server. Something to keep in mind for anyone else with similar issues.

Tom McAnnally