Authenticator App Issues

Calvo, Anthony 0 Reputation points
2026-06-27T15:32:30.1566667+00:00

I am a student and havnt been able to access my school email or canvas page since I got my new phone just over a day ago. When I try to login to the Authenticator app, it is asking me to put a code into the app I’m trying to login to. It makes no sense. How am I supposed to login to the app when I need to already be logged in to put in the code.

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  1. Ryan-N 14,060 Reputation points Microsoft External Staff Moderator
    2026-06-27T16:44:29.2466667+00:00

    Hi Calvo, Anthony,

    Welcome to the Microsoft Q&A forum.

    Due to security requirements, when you want to use Microsoft Authenticator on a new phone, the new device must be approved by a device that has previously been registered and configured with Authenticator.

    This security measure is designed to help protect both your account and your school's tenant environment.

    In this situation, you will need to contact your school's administrator (typically the IT department) and request that they reset MFA for your account.

    When contacting them, you may also provide the following documentation that explains how to reset MFA:

    Manage authentication methods for Microsoft Entra multifactor authentication - Microsoft Entra ID |…

    Once the IT department has reset MFA for your account, the next time you sign in, you will be prompted to set up MFA again. Please complete the MFA setup on your new phone.

    I hope this information is helpful.

    If you have any questions or need further assistance, please feel free to share them in the comments on this post so I can continue to support you.

    I look forward to continuing the conversation.

     If the answer is helpful, please click "Accept Answer" and kindly upvote it.

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  2. AI answer

    2026-06-27T15:32:42.8133333+00:00

    The account is in a classic “MFA lockout after changing phones” situation: the Authenticator app is asking for approval/code from the same account that cannot be accessed because the old phone (where it was originally set up) is gone.

    To get back in, use one of these supported paths:

    1. Try another verification method (if configured)
      • On the school sign-in page, after entering the username and password, look for options like:
        • Use a different verification option
        • I can’t use my Microsoft Authenticator app right now
      • Choose another method that was set up earlier (SMS, call, alternate email, etc.).
      • If a code is sent but not received, follow the guidance in the “I’m not getting my verification code” section:
        • Avoid repeated requests (this can cause temporary blocking).
        • Check junk/spam for mail from @accountprotection.microsoft.com.
        • Confirm the phone/email are correct on the Security info page if access is still available on another device.
    2. If sign-in is blocked after many attempts
      • Multiple failed MFA attempts can trigger protection and temporarily block sign-in.
      • In that case, wait and then try again, or use a different MFA method if one is available.
      • If there is any suspicion someone else is trying to sign in, the school IT admin should check Microsoft Entra sign-in logs.
    3. If no other MFA method works or is available
      • When all configured methods (Authenticator, SMS, email) are unusable, self-service recovery is usually not possible.
      • In that case, contact the school’s IT/help desk and explain:
        • A new phone is being used.
        • The old Authenticator app is no longer accessible.
        • The account is now stuck at the MFA step.
      • The school’s Microsoft Entra administrator can reset MFA or require re-registration of MFA for the student account, after verifying identity.

    Until an admin resets MFA or another working method is used, the Authenticator app will keep asking for a code/approval that cannot be provided, which is expected behavior when the original device is lost.

    References:

    AI-generated content may be incorrect. Read our transparency notes for more information.

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