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Microsoft Security | Microsoft Authenticator
A Microsoft app for iOS and Android devices that enables authentication with two-factor verification, phone sign-in, and code generation
Thanks for posting your question in the Microsoft Q&A forum. I hope this video can help you:
https://www.youtube.com/watch?v=dRHoId0-8qA
or these articles
https://support.microsoft.com/en-us/account-billing/back-up-and-recover-account-credentials-in-the-authenticator-app-bb939936-7a8d-4e88-bc43-49bc1a700a40 Common problems with two-step verification for a work or school account - Microsoft Support In the absence of a backup for restoration, the sole recourse is to utilize the account recovery methods provided by each service provider. The Microsoft Authenticator functions solely as a code generator. ** Please don't forget to close up the thread here by upvoting and accept it as an answer if it is helpful **