ID-01Moderate

How to Fix: User MFA Registration

Step-by-step guide to implement user mfa registration in your Microsoft 365 environment.

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30-60 minutes

Estimated Time

4

Steps

critical

Severity

Recommended Secure

Baseline Level

Why This Matters

MFA blocks over 99.9% of account compromise attacks. Even with a CA policy requiring MFA, users must actually register MFA methods to be protected. Low registration means users are vulnerable.

Prerequisites

  • 1Global Administrator or appropriate admin role in Microsoft Entra ID
  • 2Access to Microsoft Entra admin center (entra.microsoft.com)

Expected Configuration

  • 95% or more of users have MFA methods registered
  • Users have registered Microsoft Authenticator, security keys, or phone
  • Break-glass accounts are excluded from this metric

Remediation Steps

1

Assess Current Identity Configuration

Review your current identity settings in Microsoft Entra ID.

  • Navigate to Microsoft Entra admin center
  • Go to Identity > Users or relevant section
  • Review current configuration
2

Plan Required Changes

Determine what modifications are needed.

  • Compare current state to expected configuration
  • Identify affected users or groups
  • Plan rollout strategy
3

Apply Configuration

Implement the required identity configuration changes.

  • Update relevant settings
  • Configure policies as needed
  • Apply changes to affected scope
4

Validate Changes

Confirm the configuration meets requirements.

  • Run TrueConfig scan
  • Verify expected behavior
  • Monitor for any issues

Related Resources

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