Hi @BOVAY Louis ,
Thanks for reaching out to Microsoft Q&A.
We first need to understand why and how your users are being prompted for MFA. The screenshot you provided has the configuration for Identity Protection only, which is basically a feature that will request your users to MFA in case their accounts are at risk.
In order to check how MFA is being triggered, we need to understand how MFA is enabled on the Entra ID tenant which usually occurs in 3 ways:
1 - Security Defaults. This is a feature that Microsoft started to enabled by default to Entra ID tenants that do not have either P1 licenses or a Conditional Access policy configured. You can check and disable Security Defaults using these steps: https://learn.microsoft.com/en-us/azure/active-directory/fundamentals/security-defaults#enabling-security-defaults
2 - Per User MFA. You can see the user MFA status by using the instructions in this document. You can disable it if it's being enforced that way https://learn.microsoft.com/en-us/azure/active-directory/authentication/howto-mfa-userstates#view-the-status-for-a-user
3 - Using Conditional Access Policies. Check Conditional Access Policies via Microsoft Entra ID / Security / Conditional Access Policy and search for any policy related to MFA.
Let me know if you have further questions.
Thanks,
Fabio