Sign in to your accounts using the Microsoft Authenticator app
https://support.microsoft.com/en-us/account-billing/sign-in-to-your-accounts-using-the-microsoft-authenticator-app-582bdc07-4566-4c97-a7aa-56058122714c
WebPrerequisites. Before you can use the Microsoft Authenticator app, you must: Download and install the Microsoft Authenticator app. If you haven't done this yet, see Download and install the app. Add your work/school, personal, and third-party accounts to the Microsoft Authenticator app.
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