Can you confirm that you have already add
security proofs like phone numbers, alternate email addresses, and security questions and answers to your
In such cases when you have applied changes to your Microsoft accont, it is recommended that you clear your Xbox system cache and recover your profile from LIVE.
Clear Xbox system cache.
Restart your console download your Xbox LIVE profile.
Download Xbox LIVE profile.
Press X to sign out of your profile.
Post back and let us know how it goes.
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Your connection is OK but you have a problem with your security proofs.
Please update them and if the problem persists, please post in the appropriate forum, Forum 03