I have an Xbox account and have unfortunately forgotten the email address. But I still have gamertag and password. I do not want to lose the account because of my friends and successes. Can I do something?
So I already had the problem, only an e-mail account did not exist anymore.
There's indeed a possibility. Microsoft requires some specific security questions when changing the password and / or email address, such as: How your username is on Skype or how many products you use from Microsoft, etc.
I had given it up the production of my original Xbox account, because the security questions seemed too stupid XD
