How to use the Microsoft Authenticator app - Microsoft Support
https://support.microsoft.com/en-us/account-billing/how-to-use-the-microsoft-authenticator-app-9783c865-0308-42fb-a519-8cf666fe0acc
With this free app, you can sign in to your personal or work/school Microsoft account without using a password. You’ll use a fingerprint, face recognition, or a PIN for security. Note: As of March 2024, Microsoft will no longer support Authenticator App versions greater than …
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