

The preview rolled out on 1 March and should be effective in all tenants. Microsoft 365 message center notification MC523051 (3 March 2023) announces the public preview of another Azure Active Directory tweak to make multi-factor authentication (MFA) the de facto authentication method for Microsoft 365 tenants. System-Preferred Authentication Policy Selects Strongest Available Authentication Method Microsoft Authenticator App is Now the Standard.Enabling the System-Preferred Authentication Policy.A Mechanism to Help Organizations Dump SMS MFA Challenges.


What System-Preferred Authentication Means.System-Preferred Authentication Policy Selects Strongest Available Authentication Method.
