STIGUI
V-278674CAT II — Medium severitySV-278674r1192826_rule

Microsoft Defender AV must enable EDR in block mode.

Rule version WNDF-AV-000070 · STIG v2 · 2026-09-02

Discussion

EDR in block mode allows Microsoft Defender Antivirus to take actions on post-breach, behavioral EDR detections. EDR in block mode is integrated with threat and vulnerability management capabilities.

Check

Verify the policy value for Computer Configuration >> Administrative Templates >> Windows Components >> Microsoft Defender Antivirus >> Features >> Enable EDR in block mode is set to "Enabled"; otherwise, this is a finding.

Procedure: Use the Windows Registry Editor to navigate to the following key: HKLM\Software\Policies\Microsoft\Windows Defender\Features

Criteria: If the value "PassiveRemediation" is REG_DWORD = 1, this is not a finding.

If the value is 0, this is a finding.

Fix

Set the policy value for Computer Configuration >> Administrative Templates >> Windows Components >> Microsoft Defender Antivirus >> Features >> Enable EDR in block mode to "Enabled".

Identifiers

Group ID
V-278674
Group title
SRG-APP-000210
Rule ID
SV-278674r1192826_rule
Check ID
C-83208r1144070_chk
Fix ID
F-83113r1190762_fix