To those asking if I have tried signing in with outlook, yes I have and it does not work. My brother can sign in to xbox with his new outlook email, I cannot. It was fine yesterday I had a hotmail folder in my outlook and everything, then I wake up today and it's all gone, can't sign in to xbox or anything and it's like I never had that hotmail id- note again that my brother with a new outlook email can and he can still see all the old email. Who should I contact? I tweeted at xbox support.