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
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Hi , i have a problem , i changed my phone and now I can't get the code in the authenticator.Thanks .
Click on the link - https://mysignins.microsoft.com/security-info and login with your email
From 'Security info' tab click on 'Add method' and select 'Authenticator app'
And follow the default options and add your new phone number.
Hope this will resolve your issue.
Cheers,
Sri