Author: Forrest Zhang
Disabling two-factor authentication in Microsoft Entra ID is not always a single-setting change. In many tenants, MFA can be enforced from several different places, so turning off one control does not necessarily stop sign-in prompts.
The practical issue is that administrators often disable Security Defaults and still see users prompted to register Microsoft Authenticator or complete MFA. Based on Microsoft documentation, that usually means another enforcement path is still active, such as the registration campaign, Conditional Access, per-user MFA, authentication method settings, or Microsoft’s mandatory MFA requirements for certain admin portals.