How to replace Microsoft Authenticator app on new phone without access to old app

Question

hi i had the Microsoft Authenticator app for this email on a phone which got broken i cant sign in to a new device or anything without the code which is only found on the broken phone.

Note: my Pc is the only place where i can access the account because of saved password.

Note: its Microsoft 365

how can i change the authenticator app for my new phone without having the code ??

Answer 1

You can restore from an authenticator cloud backup (assuming there was one) but make sure no accounts have been added to the newly install app. Then sign on with recovery account to do the restore.

You can recover your account credentials from your cloud account, but you must first make sure that the account you're recovering doesn't exist in the Microsoft Authenticator app. For example, if you're recovering your personal Microsoft account, you must make sure you don't have a personal Microsoft account already set up in the authenticator app. This check is important so we can be sure we're not overwriting or erasing an existing account by mistake. https://support.microsoft.com/en-us/account-billing/back-up-and-recover-account-credentials-in-the-authenticator-app-bb939936-7a8d-4e88-bc43-49bc1a700a40

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Answer 2

You'll need the account admins to reset the account so a new QR code can be generated with which you can relink the authentication device to your account.

If you are the admin (and blocked) then you can reach out to 365 global customer service here.
https://support.microsoft.com/en-gb/topic/global-customer-service-phone-numbers-c0389ade-5640-e588-8b0e-28de8afeb3f2

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