Here are some steps you might consider trying to resolve the issue:
- Identify the account type:
• If this is an organizational account (for example, through your employer), you may need to contact your old employer’s IT department or Teams administrator to help remove or update the phone number.
• If it’s a personal Microsoft account that became linked to an old work email or number, you’ll need to address it in your Microsoft account settings.
- Try Microsoft account recovery:
• Visit the Microsoft account recovery page (account.live.com/acsr) and follow the prompts. You might be asked to verify your identity using alternative methods. If you still have access to the email address associated with the old account, this could help you regain control.
• If you have forgotten your account credentials, click on “Forgot my password” and follow the instructions.
- Remove or update your phone number:
• Once you regain access to the account, go to your account’s Security settings and review the contact information. Remove the phone number if it’s no longer valid or add the correct one.
• Alternatively, you could update the authentication methods used for any multi-factor authentication (MFA) if prompted.
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