First off, I'm not exactly sure this is the right section for what I need help with but it was the closest subject. And sorry for the length.
My brother is trying to access his account which used to have Live, but not anymore. When he first tries to sign in it asks for his Microsoft account details, but he doesn't remember ever making one. We tried using the only email account he's ever had, but it said there wasn't an account under that email address. I went and created a Microsoft account with it, and it generated a random gamertag. It won't allow him/me to use it because it isn't synced up with his gamertag.
As far as I know, the only way to sync your Microsoft account and gamertag is through your account settings, but the menu asking for the Microsoft account details won't allow me to get to the settings, because if I back out it signs out the profile.
I'm lost and have no idea what to do. Any help would be greatly appreciated.