Since I upgraded to Windows 10 I hadn't been able to sign in into the Xbox app, so I went into settings and Profiles and then to "Your Account" there was a message saying "You have to verify your Identity on this computer" and i press the "Verify" button underneath, after a couple of seconds this message pops up: "We couldn't log you on" "Catastrophic Failure". If I try again it says on the error description: "local device name is already in use". I have even tried to change to local account in order to sign up again into a Microsoft account, but when I do I'm not able to sign up with my Microsoft account because the link simply does nothing. Please Help! I'm really willing to stream my games on my pc.