This usually generates a QR code, which you can then scan using the Microsoft Authenticator app. Now that you have your accounts set up, you'll be prompted to enter a six-digit code the next time ...

You can use Microsoft Authenticator on multiple devices by scanning the same QR code during setup. When the QR code is displayed, scan it on both phones to ensure they generate identical codes.

1] When other sign-in options are available The problem occurs when you use the Microsoft Authenticator app on your phone to recover your Microsoft account. Recovering a Microsoft account using ...