Unable to Sign in to Outlook After Losing My Phone

Question

Unable to Sign in to Outlook After Losing My Phone

Kane Bloody 0

I am a student at my school, and I recently lost my phone. I got a new phone, but I cannot use Microsoft Authenticator to complete MFA.

When I try to sign in to my school Outlook account, it asks me to verify my identity using MFA, but I no longer have access to my old phone.

Could someone please advise me on how I can reset or set up MFA on my new phone so I can access my Outlook account again?

Thank you for your help.

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1 answer

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Answer 1

Hi Kane,

Thank you for reaching out and I'm sorry to hear you're having trouble signing in to your Microsoft account.

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 school account, the MFA settings are managed by your school's IT administrator. Unfortunately, this isn't something that can be reset from the user side.

I'd recommend reaching out to your school's IT administrator and explaining that you're unable to sign in because you're stuck between Microsoft Outlook 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

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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.

Best regards,

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