Microsoft 365 features that help users manage their subscriptions, account settings, and billing information.
Good day Dylan,
Thank you for sharing your concern.
Please note that forum users do not have access to user account settings and cannot assist with logging in, resetting passwords, or changing access rights.
If you are unable to sign in to your work email because of the Microsoft Authenticator app after changing your phone, please refer to the information below:
This situation commonly occurs when the authenticator registration is no longer linked correctly to the device. For example, this can happen after changing phones, reinstalling the Microsoft Authenticator app or when the existing MFA registration becomes invalid.
Since you are using a work email address, the MFA settings are managed by your organization's IT department. For assistance with resetting or updating your MFA, you will need to contact them directly to resolve this and explain your situation. You can say: "I am stuck in a login loop between Microsoft Teams and the Microsoft Authenticator app. I cannot get the code to sign in."
Specifically, ask them to “reset my MFA settings” or “allow me to re-register for MFA” on your account. This is a standard request and your school’s IT team should be able to assist you with it. You can also share the steps in this Microsoft article for them so they can help reset your MFA settings for you Manage user authentication methods for Microsoft Entra multifactor authentication.
Once your organization's IT admin has reset your MFA, the next time you log in to your account, you will be guided through the process of setting up the Microsoft Authenticator app again from the beginning by scanning a QR code. This will break the loop and allow you to access your account normally.
Additional information is available in the following resource: How to add your accounts to Microsoft Authenticator | Microsoft Support
Note: In case you do not know who is your IT admin, kindly refer to this article: How do I find my Microsoft 365 admin? - Microsoft Support
If you have any questions or need further support, please don’t hesitate to reach out at any time.
Thank you for your patience and understanding.
If the answer is helpful, please click "Yes" and kindly upvote it. If you have any extra questions about this answer, please click "Comment".
Note: Please follow the steps in the forum documentation to enable e-mail notifications if you want to receive the related email notification for this thread.