I have lost my microsoft authenticator app phone

Revell, Andrew 0 Reputation points
2023-06-02T09:40:59.6366667+00:00

I can sign in to my work office account, but when I navigate to my account, and then update security information, I am prompted with a microsoft authenticator response. I have since lost the microsoft authenticator phone. My work have their own onelogin MFA setup which has been reset successfully, but I am still prompted with this microsoft authenticator prompt which I can only imagine is going to the old phone.

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Microsoft Authenticator
Microsoft Authenticator
A Microsoft app for iOS and Android devices that enables authentication with two-factor verification, phone sign-in, and code generation.
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  1. JimmySalian-2011 42,066 Reputation points
    2023-06-02T10:28:17.47+00:00

    Hi,

    It seems the MFA will require a reset for your account within the Tesco AD tenant, you will need to contact your sys admin to get it reset so you can reconfigure to the new phone.

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  2. Rafael da Rocha 5,091 Reputation points
    2023-06-02T10:40:36.37+00:00

    Hello Andrew,

    your administrator can reset your MFA enrollment on Microsoft 365, so that on your next login you would register your new Authenticator.

    Here's the reference documentation:

    https://learn.microsoft.com/en-us/azure/active-directory/authentication/howto-mfa-userdevicesettings


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