Authenticator connexion

Question

Authenticator connexion

Mia Paquin 5

Hello, I changed phone recently and I’m not able to use my Microsoft Authenticator, on the app it’s asking me to provide a code from Authenticator but I’m already on the app. I don’t understand the problem and I’m wondering how I can make it work.

thank you

Carolyne-3676 1,136 Reputation points

2026-03-30T11:41:26.0433333+00:00

Hello Mia!
You’re stuck in an Authenticator loop because the old device is still registered — the fix is to have your organization’s IT/admin reset your MFA methods so you can re‑register Microsoft Authenticator on the new phone; this can’t be bypassed from the app itself.
If this is a work or school account, only the tenant admin can resolve it by forcing MFA re‑registration; end users cannot self‑recover when Authenticator is the only method configured.
If you had backed up you can restore them - https://support.microsoft.com/en-us/authenticator/back-up-your-accounts-in-microsoft-authenticator
Doc references- https://support.microsoft.com/en-us/authenticator/restore-account-credentials-from-microsoft-authenticator

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Carolyne-3676 1,136 Reputation points

2026-03-30T11:41:26.0433333+00:00

Hello Mia!
You’re stuck in an Authenticator loop because the old device is still registered — the fix is to have your organization’s IT/admin reset your MFA methods so you can re‑register Microsoft Authenticator on the new phone; this can’t be bypassed from the app itself.
If this is a work or school account, only the tenant admin can resolve it by forcing MFA re‑registration; end users cannot self‑recover when Authenticator is the only method configured.
If you had backed up you can restore them - https://support.microsoft.com/en-us/authenticator/back-up-your-accounts-in-microsoft-authenticator
Doc references- https://support.microsoft.com/en-us/authenticator/restore-account-credentials-from-microsoft-authenticator

Answer 1

It sounds like you are experiencing issues with the Microsoft Authenticator app after changing your phone. When you switch devices, you need to ensure that your new phone is set up correctly to use the Authenticator app. Here are some steps you can take to resolve the issue:

Check for Notifications: If you are prompted to provide a code from the Authenticator app, ensure that you are checking for notifications within the app. Sometimes, notifications may not appear automatically, and you may need to refresh the app to see them.
Use Verification Codes: If notifications are not working, you can use the verification code feature. The Authenticator app can generate an OATH verification code that you can enter into the sign-in interface after entering your username and password.
Re-register the Authenticator: If you are still having trouble, you may need to re-register the Authenticator app with your account. This can involve going to your security settings in a web browser and managing your sign-in methods.
Device Enrollment: Make sure that your new device is enrolled properly if your organization requires it. You may need to sign in with your work account and complete any multi-factor authentication (MFA) requirements.

If you continue to face issues, consider reaching out to your IT support for further assistance.

References:

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Authenticator connexion

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