I have some solutions that are binded to TFS 2010. But a team project collection isn't avaible any longer. I need to rebind this solutions to a new Team project Collection on this server. I tried to change Source Control (File -> Source Control -> Change Source Control). After pressing "Change Source Control" the window with the worlds "Would you like to completely disassociate solution from TFS" appeared, I pressed Yes. But when I'm trying to add this solution to this new project collection, I have the message that I cant do this, because the previous team project collection is unavailable. I've deleted tags from solution file and projects files and all *.vssscc, *.vspscc files. But I have got the similar error message after several attempts.
Message:
Team foundation server http://tfs.dynamics...etc does not exist or is not available at this moment. Technical information for the administrator: Service Team foundation not available on server http://tfs.dynamics.../<OLDPROJECTCOLLECTION>