A Microsoft app for iOS and Android devices that enables authentication with two-factor verification, phone sign-in, and code generation
Hi Daniel,
Please reinstall the Microsoft Authenticator app on your phone, and try to follow the steps from the article (https://support.microsoft.com/en-us/account-billing/set-up-the-microsoft-authenticator-app-as-your-verification-method-33452159-6af9-438f-8f82-63ce94cf3d29#:%7E:text=Sign%20in%20to%20your%20work%20or%20school%20account,select%20Add%20method%20in%20the%20Security%20info%20pane.) again to onboard your account to the MFA.
If that doesn't resolve your issue with MFA endless loop, then you'll have to contact your IT department to reset your MFA status, so you can set up the Microsoft Authenticator app as your verification method.
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Best regards,
JJ