I lost access to authenticator app

Question

I lost access to authenticator app

Gasper Galic 25

I recently changed my phone. On my old device i was logged in authenticator app for my personal and school account.

I managed to get acces to personal account but with school account when i select in the sign in options "i don't have access to authenticator app" it only shows me options "get code from authenticator app" i don't know what to do. I am still logged in to school account on my iPad but only in outlook.

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Answer 1

Hi Gasper,

From what you've described, it sounds like your Multi-Factor Authentication (MFA) setup may need to be reset. This can sometimes happen after switching to a new device, replacing a phone, or reinstalling the Microsoft Authenticator app. Since your new device hasn't been registered yet, the authentication requests may still be linked to your previous device, which can leave you stuck in a sign-in loop.

Because you're using a work or school account, the MFA settings are managed by your university's IT administrator. Unfortunately, this isn't something that can be reset from the user side.

I'd recommend reaching out to your university's IT administrator and explaining that you're unable to sign in because you're stuck between Microsoft Teams and the Microsoft Authenticator app and are no longer receiving authentication prompts or codes.

You can specifically ask whether they can:

Reset your MFA settings
Require MFA re-registration
Remove your existing Authenticator registration so you can set it up again

You may also want to share the following Microsoft article with them: Manage authentication methods for Microsoft Entra multifactor authentication - Microsoft Entra ID | …

If you are unsure who your IT administrator is, you can refer to this official Microsoft guide for assistance: How do I find my Microsoft 365 admin? - Microsoft Support

User's image Once your IT administrator resets your MFA registration, you should be able to sign in again and go through the Microsoft Authenticator setup process from the beginning, including scanning a new QR code on your device.

I hope this points you in the right direction. If you receive any updates from your IT team or run into any issues along the way, feel free to reply back with more details and I'll be happy to help further.

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