my problem is that every time I start VS, I see
HTTP code 407: Proxy Authentication Required
in the Output window.
This is despite me having entered the credentials AND having agreed to remember the credentials.
So now I have to go to Team->Manage Connections. This opens Team Explorer with a "Manage Connections" link. That gives me a window where my Team Foundation Server is already configured but under Team Project Collections I see the 407 error. Below that I need to click Switch User. This gives me a login promt where --- and here comes the funny part --- I just type the first letter of my login and click on the suggested name, which autofills username and password and after that I get a succesful connection.
So WHY does not this work automatically? All information is obviously already there! Is this a known bug or am I missing some further options?