Hi robert Jones,
Because an Xbox profile is tied to a Microsoft account, recovering the Xbox account depends on regaining access to the underlying Microsoft account. If your brother has not done so already, I would encourage him to complete the account recovery process as soon as possible and provide as much ownership information as he can.
When submitting a recovery request, encourage him to provide as much accurate information as possible, such as previous passwords, his Xbox gamertag, subscription or purchase history, and any other details only the account owner would know. If available, he can also contact Xbox Support for guidance specific to Xbox accounts. For more information, please visit https://support.microsoft.com/en-us/account-billing/how-to-recover-a-hacked-or-compromised-microsoft-account-24ca907d-bcdf-a44b-4656-47f0cd89c245
It's also worth checking the original email account for any security notifications about recent account changes, as those messages may contain helpful information.
Please note that this is a user-to-user support forum. Moderators, contributors, and external Microsoft employees cannot access account records, reverse account changes, or intervene in the recovery process. Microsoft's account recovery system and Xbox Support are the appropriate channels for assistance.
Hopefully your brother is able to verify ownership and regain access to the account soon. I know this isn't the news you were hoping for, but I wanted to make sure you got the most accurate information about your situation. Thank you so much for your understanding.
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