A Microsoft app for iOS and Android devices that enables authentication with two-factor verification, phone sign-in, and code generation
I am having this problem as well. I can not log in to Microsoft 365 on my phone or computer. The scan QR code only works if you're logged in on another device. I can not log in on any device because I can not log in to the authenticator app. This is crazy! I know that my Gmail is another point of contact because I can reset my password and Microsoft sends a code for resetting the password to my email.