This guide should be followed to complete the process of setting up passwordless sign-in with the Microsoft Authenticator.
Step 1. Open the Authenticator app on your phone and tap ContactUS LLC to enter the settings for your work account.
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Step 2.
Click Enable phone sign-in or Set up phone sign-in depending on the type of device you have.
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Step 3.
Click Continue and enter your password on the next screen if prompted.
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Step 4.
When prompted, either enter the code provided by the authenticator app (it will be sent via text) or you’ll be asked to approve a sign in request from the app, then hit Verify
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This is what the screen that prompts you to approve the sign in box looks like. Or you may be asked to press Approve or Deny.
Step 5.
On this screen, tap Register.
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Once you do this, you should see an Account Added screen where you can select Finish.