Security checks / Check reference / Tenant-wide
Security Defaults Disabled No Conditional Access
Critical Severity Microsoft 365 security check in the Tenant-wide domain.
Security defaults are disabled and no Conditional Access policies are configured. The tenant has no enforced MFA baseline Without security defaults or Conditional Access, no MFA is enforced and legacy authentication is allowed; credential attacks succeed unchallenged Siemserva runs this check automatically across your tenant and maps every finding to the compliance frameworks below.
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Check summary
What this check verifies
Security defaults are disabled and no Conditional Access policies are configured. The tenant has no enforced MFA baseline
Why it matters
Without security defaults or Conditional Access, no MFA is enforced and legacy authentication is allowed; credential attacks succeed unchallenged
How to fix it
Entra admin center → Identity → Overview → Properties → Manage security defaults (enable as immediate baseline); or deploy these minimum CA policies: 1. Require MFA for all users (All users, All cloud apps, Grant: Require MFA); 2. Block legacy auth (All users, All cloud apps, Condition: Legacy auth clients, Block); 3. Require MFA for admin roles. Test each in Report-only mode before enforcing
Siemserva flags every tenant where this check fails and, with Senserva Trustworthy AI remediation, can propose a validated fix you approve before it applies.
Find this in your own Microsoft 365
This page is the public reference for one check. Siemserva by Senserva runs it, and 650+ others, against your own tenant: it shows exactly where Security Defaults Disabled No Conditional Access is failing across your environment, ranks it against everything else by real risk, maps it to the frameworks your auditors ask about, and attaches a validated fix you approve before it applies.
Your Three Free Unlimited Audits cover all of it, free with registration: 1 scan to find, 2 to review your fixes.
Built for the people who own this outcome: security and IT teams closing gaps, auditors and compliance teams gathering evidence, and MSPs and MSSPs running it across every client tenant.
Ask your own AI about this check
Copy this prompt into Claude, ChatGPT, or Copilot. The facts are included, sourced from this page.
Compliance framework mappings
Findings from this check serve as evidence for:
References
Related Tenant-wide checks
Common questions
What does the Security Defaults Disabled No Conditional Access check verify?
Security defaults are disabled and no Conditional Access policies are configured. The tenant has no enforced MFA baseline It is a Critical Severity check in the Tenant-wide domain, one of the 650+ checks Siemserva runs across Microsoft 365, Intune, Defender, and Entra ID.
How do I fix a Security Defaults Disabled No Conditional Access finding?
Entra admin center → Identity → Overview → Properties → Manage security defaults (enable as immediate baseline); or deploy these minimum CA policies: 1. Require MFA for all users (All users, All cloud apps, Grant: Require MFA); 2. Block legacy auth (All users, All cloud apps, Condition: Legacy auth clients, Block); 3. Require MFA for admin roles. Test each in Report-only mode before enforcing Siemserva ranks the finding by Severity and, with Senserva Trustworthy AI, can propose a validated, approve-before-apply configuration fix.
Which compliance frameworks does this check evidence?
Findings from this check map to SCuBA, MCSB, NIST, SOC2, CIS, and MCSB controls IM-6, IM-7. That mapping is what turns a scan finding into audit evidence.
Can I ask my own AI about this check?
Yes. This page includes a free copy-paste AI prompt carrying the check's facts: what it verifies, the risk, the remediation, and the framework mappings. Paste it into Claude, ChatGPT, or Copilot; cite-worthy detail without giving an AI access to your tenant.
All 672 checks with severities and mappings: the Microsoft 365 security checks catalog.