A Microsoft app for iOS and Android devices that enables authentication with two-factor verification, phone sign-in, and code generation
Hello B bia, thank you for posting in our community!
Sorry to hear you're having trouble with the Authenticator. Based on what I’m seeing, it looks like your phone is not yet registered for Multi-Factor Authentication (MFA). Please follow these steps to add your phone to the Authenticator: Add Authenticator to verify sign-in.
I hope this helps!
Best regards,
John Oli