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Authenticator says the code is already used

Anonymous
2023-10-02T22:39:29+00:00

When i try to do a login in the PC is always asking for the Authenticator App , that was already installed. Is always stating that is protecting the account. Then in the process is asking for QR code , but the QR code was already used and is allways in a loop because the code was already used. Strangely i can login in the mobile. I’m ising text message for the device as administrador of a schollar instalation.

At the final i cannot login in any device except mobile.

Microsoft 365 and Office | Subscription, account, billing | For education | Other

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  1. Anonymous
    2023-11-13T11:45:55+00:00

    Similar issue with some users.

    Cleaning MFA (both old MFA and new MFA portal), requiring re-registration of MFA (both old MFA and new MFA portal) does not solve the issue.

    But...

    Using the optional third party configuration with Microsoft authenticator works. Go figure.

    So anyone with the issue, try third party configuration with Authenticator... the only drawback is that you can only use the code to verify, not the advanced popup with number + fingerprint/face ID. Not ideal for password-less access, but to get people up and running, that's one way... :)

    I also have users with MFA registered to mobile phone or Office phone (???) and this entry (the phone number) is nowhere to be seen in both the old and new portal for MFA or in Azure AD.
    Call opened with Microsoft.

    If anyone else knows more, please update...

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  2. Anonymous
    2023-10-03T03:02:54+00:00

    Dear Admin School FRC,

    Thank you for posting to Microsoft Community. We are happy to assist you.

    I'm sorry to hear that you're having trouble logging in to your Microsoft account using the Authenticator app. It sounds like there may be an issue with the QR code that you used to set up the app on your PC. There might be something stuck in the systm during the process.

    To resolve this issue, you can try to remove and re-add the MFA option for this account, then you woule be able to reset the Authenticator app again.

    Since you are the only admin of your tenant, the best option is to call Microsoft date protection team to help with the MFA resetting. For contacting Microsoft data protection team, please find the number according to your Country/Region: Global Customer Service phone numbers - Microsoft Support. When calling, please select "For business" when you have this option.

    After resetting MFA, please follow the reqiried tesps to set up the Authenticator when login the account again. If the issue persists, please feel free to let me know, I will try my best to investigate.

    Furthermore, I have gone through your scenario, and I would like to share some information with you, Microsoft has specific dedicated support channel for certain different support scope and attributes, would you mind to contacting and place your scenario on our dedicated Microsoft Q&A forum support resources? Our relevant expert community members can provide possible information from their side about your certain scenario.

    Here is this dedicated support channel to place your concern: microsoft-authenticator - Microsoft Q&A.

    I hope the information can be useful. If there is any update or I misunderstand you, please feel free to let me know. I will continue to assist you. Your understanding and co-operation are highly appreciated.

    Thanks for your precious time. Have a nice day.

    Sincerely,

    Sherry | Microsoft Community Moderator

    5 people found this answer helpful.
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