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John Twohig's avatar
John Twohig
Iron Contributor
Jul 13, 2022
Solved

MFA says enabled but user is using MFA

My understanding was that if O365 said that MFA was enabled for a user then that user would be required to register for MFA and, once they completed that process, their status would change from enabled to enforced.

 

I just noticed a user with a status of enabled who has been signing in for months with MFA. Every signin says the Authentication Requirement is Multifactor Authentication. 

 

Why does his status not say enforced?

  • That's likely because the user is on a Azure AD joined device and leveraging the PRT to login - this method always counts as second-factor.

4 Replies

  • Enabled/enforced only applies to the old per-user MFA controls. If MFA is being enforced via CA policy (or anything else), the user will have to complete MFA challenge regardless of what the per-user status is. Checking the details within the Azure AD sign-in logs entry will give you a clue as to why MFA was required.
    • John Twohig's avatar
      John Twohig
      Iron Contributor
      There are no Conditional Access policies for MFA so, if the requirement isn't coming from the "old per-user" controls, which is where I thought it was always coming from, then where else could it come from?

      I don't see much difference between this user's sign-in logs and others. However, it does say that he uses Windows Hello for Business and others don't.
      • VasilMichev's avatar
        VasilMichev
        MVP
        That's likely because the user is on a Azure AD joined device and leveraging the PRT to login - this method always counts as second-factor.

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