Expert Answer

How many Global Admin accounts should I have in Microsoft 365?

Quick Answer

Microsoft recommends 2-4 Global Admin accounts per tenant. Having fewer than 2 creates risk if one account is locked out. Having more than 4 unnecessarily expands your attack surface.

Detailed Explanation

Microsoft recommends maintaining 2-4 Global Administrator accounts in your Microsoft 365 tenant. This guidance balances operational resilience with security:

  • *Why at least 2:
  • Prevents lockout if one account is compromised or unavailable
  • Enables password recovery and emergency access
  • Allows for proper change management approval workflows
  • *Why no more than 4:
  • Global Admin is the most privileged role with complete tenant access
  • Each additional account expands your attack surface
  • More accounts are harder to monitor and secure
  • Most administrative tasks don't require Global Admin privileges

Best practices: 1. Use dedicated admin accounts separate from daily-use accounts 2. Require phishing-resistant MFA (FIDO2 or Windows Hello) 3. Use Privileged Identity Management (PIM) for just-in-time access 4. Also maintain 2 emergency break-glass accounts stored securely 5. Assign task-specific admin roles instead of Global Admin where possible

TrueConfig control PA-01 monitors your Global Admin count and alerts when it exceeds recommended thresholds.

Related TrueConfig Controls

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