his can be a tricky situation, but there are a few steps you can take:
Use a Backup Code: If you set up the Authenticator app and were given backup codes, you can use one of these codes to bypass the Authenticator app.
Contact Your IT Administrator: If this is a work or school account, your IT department should be able to help you. They have the ability to reset your MFA settings.
Use the Self-service Password Reset (SSPR): Depending on your company's settings, you might be able to use the self-service password reset feature to regain access to your account.
Contact Microsoft Support: If none of the above steps work, you should contact Microsoft Support. They might be able to help you regain access to your account.
The important thing to remember going forward is that the Authenticator app is designed to enhance the security of your account, and you should set it up as soon as you regain access. Be sure to also note down your backup codes and keep them in a safe place.