I have lost my microsoft authenticator app phone

Question

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.

Answer 1

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.

Answer 2

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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