How to Fix: Require MFA for Guest Users
Step-by-step guide to implement require mfa for guest users in your Microsoft 365 environment.
5-10 minutes
Estimated Time
4
Steps
medium
Severity
Recommended Secure
Baseline Level
Why This Matters
Guest accounts often have weaker security than internal accounts. Requiring MFA for guests ensures external collaborators meet the same authentication standards as your employees.
Prerequisites
- 1Global Administrator or appropriate admin role in Microsoft Entra ID
- 2Access to Microsoft Entra admin center (entra.microsoft.com)
Expected Configuration
- Guest users are included in MFA Conditional Access policies
- Guests must complete MFA on every sign-in
- Trust settings do not exempt guest MFA requirements
Remediation Steps
Review Current Configuration
Assess your current configuration in Microsoft Entra admin center.
- •Navigate to the relevant section in Entra admin center
- •Document current settings
- •Compare against expected state
Plan Implementation
Determine the changes needed to meet the expected configuration.
- •Review expected configuration requirements
- •Identify affected users or resources
- •Plan rollout strategy
Implement Changes
Apply the necessary configuration changes.
- •Make required configuration updates
- •Apply to appropriate scope
- •Document changes made
Validate and Monitor
Verify the changes are working as expected.
- •Run TrueConfig scan to verify compliance
- •Test affected functionality
- •Set up ongoing monitoring
Auto-Remediation Available
TrueConfig can automatically fix this control for you. Enable auto-remediation to have this configuration applied and maintained automatically.
Learn about auto-remediationRelated Resources
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