Team: Huntress Managed Endpoint Detection and Response (EDR)
Products: Managed Microsoft Defender AV, Huntress SIEM (Windows Event Logs), other Windows‑based Huntress controls
Environment: Windows OS; Microsoft Active Directory (GPO); Microsoft Intune / Entra ID; Microsoft Defender for Endpoint (MDE); other management tools (RMM, 3rd‑party AV/Defender platforms)
Summary: Explains how Huntress‑applied Windows security settings (for example Managed Defender policy and Advanced Audit Policy for SIEM) interact with native Windows policy sources (GPO, Intune, MDE) and non‑native sources (RMM or Defender AV management platforms) to determine the final, effective configuration enforced on the endpoint.
The Microsoft Defender AV Policy Precedence Flow
Microsoft Defender Antivirus can be configured by many different sources, including Domain Group Policy, Microsoft Intune, and Huntress, among others. When a setting is configured in multiple places, Defender follows a strict precedence hierarchy on the endpoint to determine the single, effective policy.
The policy method highest on the list below wins and dictates the final setting applied on the host, overriding the same setting from any lower-priority source.
Configuration Precedence Hierarchy
* Domain Policy (OU > Domain > Site)
This represents policies configured through your on-premises Active Directory Group Policy Objects (GPOs). As the top-level management layer in a domain-joined environment, Domain Policy settings will always take precedence over all subsequent management layers (Intune, MDE, and Huntress) unless a specific policy override (like MDMWinsOverGP) is explicitly configured.
The notation (OU > Domain > Site) clarifies the standard GPO precedence chain, with policies linked to the Organizational Unit (OU) winning over policies linked at broader scopes (Domain and Site).
** Huntress Managed AV Policy (Local Registry Enforcement)
Huntress Managed AV applies its policy settings by writing directly to the local machine's registry keys. This configuration method ensures that Huntress successfully overwrites any settings that may have been manually configured by a local user or applied via Local Group Policy.
It is important to note that Huntress policies are local in nature and are designed to secure the endpoint against low-level local tampering. Consequently, the policies deployed by superior, centralized management tools like Active Directory Group Policy, Intune, or MDE will always override a conflicting Huntress setting.
The Role of the Huntress Managed AV Policy
The Huntress Managed AV Policy is designed to act as the "default security administrator" for Defender settings. It ensures that critical security settings are enabled and configured to best practices on endpoints that are not managed by higher-priority tools.
Key Considerations
- The Huntress policy cannot override GPO, Intune, or MDE policies, nor can it override policies put in place by 3rd party systems (RMM and other 3rd party Defender management systems).
- Huntress will only attempt to set policies if the endpoint is in Enforce Mode.
- If a setting configured in the Huntress dashboard is not being applied, the root cause is almost always a higher-priority policy overriding or preventing the Huntress policy from applying.
- Defender can be reset to default to clear local settings and allow the Huntress policy to enforce.
- We recommend reviewing your guide on configuring Managed Defender exclusions if you encounter unexpected merging behavior.