I set up xbox live on my xbox one and haven't had any problems. Just tried to set up my 360 on the same account and I'm having trouble. Connection is fine and it connects to xbox live but it won't let me log in. We have four profiles on the xbox one and I've tried all of them to log in on the 360. It tells me to sign in with my profile but does nothing. Then I sign up for a new account and it tells me that info is for a different profile. Getting frustrated. I'm sure it's something simple, but at this point I want to throw the system out the window. Any help is appreciated. Thanks!!