Dear Chris11118
Good day! Thank you for posting to Microsoft Community. We are happy to help you!
Based on your description, to disable the mandatory Microsoft Authenticator app, please kindly follow these steps:
- Sign in to the Azure portal as a global administrator or security administrator.
- Go to Azure Active Directory > Security > MFA.
- Under MFA settings, select Additional cloud-based MFA settings.
- Under service settings, select Microsoft Authenticator app.
- Change the setting to Disabled.
Please note that disabling the Microsoft Authenticator app may affect the security of your organization. We recommend that you consider the risks before disabling it.
If your problem persists, given that our forums do not have the relevant permissions and knowledge to fix your issue, please contact the Microsoft Authenticator App team, who have more experience and authority in this area and only handle queries related to the Microsoft Authenticator App, Therefore, I recommend contacting them by posting your question. Please submit thread here Microsoft Q & A (Microsoft Authenticator application).
Thanks in advance for your understanding! Your patience and cooperation will be highly appreciated. Hope you all the best! Merry Christmas to you in advance!
Sincerely,
Kerry Chen | Microsoft Community Moderator