Change the email address or phone number for your Microsoft account
https://support.xbox.com/en-US/help/account-profile/manage-account/change-email-sign-in-for-microsoft-account
WebSelect Add email. You can create either a new Outlook.com email address or add an address that you already have. Then, select Add alias. After you’re returned to the previous screen, select Verify, and then follow the instructions that are provided. Or, select Add phone number. Enter the phone number that you want to use, and then select Next.
DA: 87 PA: 45 MOZ Rank: 21