MFA & Verification Issues

How to Access Work Email Without the Original Microsoft Authenticator App

Maira Mehtab Sep 21, 2026 869 views

Question details

The user needs to log into a work email account but no longer has access to the phone with the original Microsoft Authenticator app.

Product: Microsoft 365 Work Email
Device & OS: not provided
Scenario: Attempting to access a work email account on a new device or browser after losing the phone that holds the MFA application.
Observed behavior: The login process is blocked because setting up the Authenticator app on a new device requires approval from the currently registered but unavailable app.

Before you start

Before proceeding, check if you previously registered an alternative authentication method (such as an SMS number or personal email) or saved your account recovery codes during the initial MFA setup.

Solution 1Recommended

Contact Your Organization's IT Department

The most secure and definitive way to regain access to a work or school account is to have your IT administrator reset your MFA settings.

Work and school accounts are managed by your organization's IT department. Microsoft intentionally prevents users from bypassing MFA on enterprise accounts for security reasons, meaning your admin is the only one who can clear the old device's registration.

Identify your IT support contact

Find the contact information for your company's IT helpdesk or the Microsoft 365 global administrator for your organization.

Request an MFA reset

Ask the administrator to 'Require re-register MFA' or 'Revoke MFA sessions' for your specific user account in the Microsoft Entra ID (formerly Azure AD) portal.

Set up Authenticator on the new device

Once the admin has reset your authentication methods, log into your work email normally. You will be prompted to set up the Microsoft Authenticator app from scratch on your new phone.

Solution 2

Use an Alternative Authentication Method or Recovery Code

If you configured backup verification methods before losing your phone, you can use them to bypass the Authenticator app requirement.

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While you are waiting for your IT department to restore your Microsoft 365 account access, consider using WPS Office as a lightweight, free alternative. It requires no complex multi-factor authentication for offline use and ensures your workflow is never interrupted.

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Frequently Asked Questions

Can I restore my Microsoft Authenticator accounts from a backup?

Yes, if you previously enabled cloud backup in the Microsoft Authenticator app on your old device. You can download the app on your new phone and select 'Begin recovery' at the bottom of the screen. You will need to sign in with the personal Microsoft account you used to create the backup.

What if I am the only global admin and I am locked out?

If you are the sole administrator for your Microsoft 365 tenant and lose access to your Authenticator app without backup methods, you will need to contact Microsoft Data Protection Support via phone. They will verify your identity and help you regain access to your tenant.

How can I prevent getting locked out of my work email in the future?

To avoid lockouts, it is highly recommended to register at least two different authentication methods in your Microsoft account security settings, such as combining the Authenticator app with an SMS number or an alternative email address.

Login & Account Issues