MFA & Verification Issues

How to Reset Microsoft School Account Password When MFA Phone Number Changed

Tauseeq Magsi Sep 25, 2026 869 views

Question details

The user is unable to access their Microsoft school account because the multi-factor authentication (MFA) verification codes are being sent to an old, inaccessible phone number.

How to Reset a School Account Password When the MFA Phone Number Changed

Product: Microsoft 365
Device & OS: not provided
Scenario: Attempting to log in to a school account or reset its password with an outdated MFA phone number.
Observed behavior: The system prompts for verification using the old phone number, preventing account access since no alternative authentication methods are available.

Before you start

Ensure you have your student ID or other official proof of identity ready, as you will need to verify your identity with your school's IT department to authorize account changes.

Solution 1Recommended

Contact Your School's IT Administrator

When you are completely locked out of your account due to an MFA phone number change, only your school's IT administrator has the privileges to reset your authentication methods.

Microsoft Entra (formerly Azure AD) security policies prevent users from changing their primary MFA phone number without logging in first. If you have no alternative authentication methods configured, an administrator must intervene.

Locate IT support contact information

Check your school's official website or student portal for the IT helpdesk phone number or email address.

Request an MFA reset

Contact the IT support team and clearly state that you have a new phone number and need them to 'Require re-register MFA' or update your authentication phone number in the Microsoft Entra admin center.

Re-register your security info

Once the administrator resets your settings, attempt to log in to your school account. You will be prompted to set up your multi-factor authentication again using your new phone number.

Information for Administrators: Administrators can resolve this by navigating to the user's profile in the Microsoft Entra admin center, selecting 'Authentication methods', and clicking 'Require re-register MFA'.

Solution 2

Try Microsoft's Self-Service Password Reset

If you forgot your password but suspect you might have an alternative verification method (like an alternate email) linked to your account, you can attempt a self-service reset.

Solution 3

Find Your Microsoft 365 Administrator

Use this solution if you do not know who your IT administrator is or how to contact the relevant technical support at your school.

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Frequently Asked Questions

Why can't I change my MFA phone number myself?

Security policies require you to successfully log in with your current MFA method before making changes to your security info. This prevents unauthorized users from hijacking your account by changing the phone number.

Can Microsoft support reset my school account MFA?

No. Microsoft support agents do not have access to manage user accounts for schools or organizations. Only your school's designated IT administrators have the authority to manage your access and reset authentication methods.

What if I also forgot my school account password?

If you forgot your password and cannot pass the MFA check, you must contact your IT administrator. They can provide a temporary password and simultaneously clear your old MFA settings so you can set up your new phone upon logging in.

How long does it take for an IT admin to reset my MFA?

This depends entirely on your school's IT helpdesk policies. Typically, once you have verified your identity with them, the administrator can perform the reset in the system instantly, and you can log in immediately afterward.

Login & Account Issues