If you have set up two-factor authentication (2FA) on your Xbox Live account or if a hacker has put it on, you cannot use the account recovery form on the Microsoft website. In such cases, it is necessary to contact Xbox support through a virtual chat or phone call. Search for "Xbox contact us," select the account and profile option, and indicate that you need a Microsoft account. Inform the support representative that your account has been compromised and follow their instructions.