MFA & Verification Issues

How to Update Microsoft Authenticator After Getting a New Phone

Tauseeq Magsi Sep 30, 2026 869 views

Question details

The user needs to transfer or update their Microsoft Authenticator app to a new phone to regain access to their work or personal accounts.

How to Update Microsoft Authenticator After Getting a New Phone

Product: Microsoft Authenticator
Device & OS: not provided
Scenario: Switching to a new smartphone while actively using Microsoft Authenticator for multi-factor authentication (MFA).
Observed behavior: The user is unable to approve sign-in requests because the Authenticator app is still registered to the previous device, preventing account access.

Before you start

Check if you still have access to your old phone, as having the original device makes it much easier to transfer accounts or approve the initial login on the new phone.

Solution 1Recommended

Contact Your IT Administrator for Work or School Accounts

For enterprise environments, security policies require an administrator to revoke the old device before you can set up a new one.

Work and school accounts are managed by your organization's security policies. When you get a new phone, the old device must be unregistered from the system to prevent unauthorized access.

Identify your IT support contact

Reach out to your organization's IT helpdesk, support team, or local network administrator.

Request an MFA reset

Explain that you have a new phone and ask them to reset your authentication methods or unregister the previous device.

Register the new phone

Once the reset is confirmed, sign in to your work or school portal on your computer. You will be prompted to set up Microsoft Authenticator again. Scan the provided QR code with your new phone.

Contact Your IT Administrator for Work or School Accounts

Admin Requirement: Only an authorized IT administrator can remove old devices for work or school accounts. You cannot bypass this manually.

Solution 2

Use Backup Verification Methods for Personal Accounts

If you are locked out of a personal Microsoft account, you can use alternative verification methods (like SMS or email) to log in and update your Authenticator.

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Frequently Asked Questions

Can I backup and restore Microsoft Authenticator to a new phone?

Yes, if you previously enabled Cloud Backup on your old phone. Install the Authenticator app on your new device and tap 'Begin recovery' at the bottom of the screen before signing in. This will restore your personal accounts.

What happens if I don't have my old phone and didn't set up backup methods?

For personal accounts, you will need to go through the Microsoft account recovery process, which takes 30 days to replace your security information. For work or school accounts, you must contact your IT administrator to regain access.

Why didn't Microsoft Authenticator transfer with my other apps?

For security reasons, Authenticator accounts are tied directly to the hardware of the specific device. App data cannot simply be cloned; you must use the built-in cloud backup/restore feature or manually add the accounts to the new phone.

Login & Account Issues