Stuck in an infinite loop of needing to already be signed in to the Authenticator app to approve a sign in FOR the authenticator app.

As an update, my problem was that because I created a business account with Microsoft under my business email address, I also needed to create a separate business Admin account (even though I'm a sole proprietor and even though that's not intuitive, as it's just me, it was necessary). The admin account (that my IT consultant created) used a special "onmicrosoft.com" email address. Once I accessed the Admin account, I was able to (1) create an Authenticator account for the Admin account, (2) access my Microsoft Admin account online, (3) view the members of my business account (consisting of my regular business email account and my new Admin account) under my groups (one of the options on the dashboard to the left), (4) make my regular business email account an owner, (5) log into my regular business Microsoft account (this time choosing a code sent via text rather than the Authenticator app; I could have stopped there as I had access but I wanted the ease of the Authenticator app); (6) once inside my regular business Microsoft account I added Microsoft authenticator as a sign-in option; (7) followed the steps (which popped up automatically) to create an Authenticator account for my regular business email using the QR code that appeared on screen, which (8) sent an Authenticator push to my phone under my regular business email Authenticator account. So long story short, because I have a business Microsoft account, I needed a separate Admin account to manage the Authenticator login process.

I can't sign in because my account says it need me to approve the sign on in the Authenticator app. HOWEVER, the sign on for the Authenticator app is ALSO saying I need to approve the sign on in the app. So I can't sign in to approve it without already being signed in. SO I am stuck in an infinite loop of it asking me to approve a sign in on my account in an app that I can't sign into without already being signed in!

If you are on a work account, you most likely need to have your administrator reset your Entra MFA (multifactor authentication) so you can re-establish Microsoft Authenticator on the new device.

Kind regards.