Connecting to Team Foundation Server (TFS) with proxy authentication

Question

Yesterday I created a new project in Codeplex. I created a connection from Visual Studio to the TFS server I was assigned and uploaded my solution successfully. Today I'm trying to connect again to the Codeplex TFS server to work on the solution. When I try to open it, I get the error:

Team Foundation Server https://tfs06.codeplex.com/ does not exist or is not accessible at this time.

The remote server returned an error: (407) Proxy Authentication Required.

The corporate environment I'm using does use proxy authentication but this wasn't an issue yesterday. Any ideas on why it worked then and how to make it work now?

Answer 1

Do you want to try refreshing the start page in Visual Studio (View, Other Windows, Start Page)? Sounds bizarre but the following forum post suggest that this might work...

http://social.msdn.microsoft.com/Forums/en-US/tfssetup/thread/c46afd34-09ea-4505-a34e-b378cb35138d

Answer 2

Visiting the Start Page (under View, Other Windows, Start Page) as recommended by Martin seems to reset the proxy authentication in some way.

An authentication prompt will then appear by going to Tools, Connect to Team Foundation Server, and selecting the server from the dropdown. Going to File, Source Control, Go Online then reconnects the solution.