Microsoft Authenticator
A Microsoft app for iOS and Android devices that enables authentication with two-factor verification, phone sign-in, and code generation.
5,537 questions
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I needed to sent my main phone to warranty, so I used my old phone, both Android, to setup the microsoft auth app again.
I can login to my account, but restoring the backup fails with a generic message saying something went wrong and that I should submit the logs. I've tried since multiple devices and they all give the same error.