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Microsoft Defender AV must scan excluded files and directories during quick scans.

Overview

Finding IDVersionRule IDIA ControlsSeverity
V-278676WNDF-AV-000072SV-278676r1192828_ruleCCI-002624medium
Description
In Microsoft Defender Antivirus, when an exclusion for a file or folder is created, it will generally be skipped during both real-time protection and on-demand scans (including quick scans and full scans). However, with newer releases, the option exists to configure quick scans to include files and directories that are otherwise excluded from real-time protection.
STIGDate
Microsoft Defender Antivirus Security Technical Implementation Guide2026-05-08

Related Frameworks

1 mapping across 5 frameworks
SCF0 mappings

No source states a mapping between these directly.

Also reachable in 3 hops (15) derived by us, not asserted by any source

Each of these is a route we composed by chaining published mappings. No publisher states a relationship between the two endpoints.

CFG-02Secure Baseline Configurations
1.00
CRY-01Use of Cryptographic Controls
1.00
CRY-01.1Alternate Physical Protection
1.00
CRY-03Transmission Confidentiality
1.00
CRY-04Transmission Integrity
1.00
CRY-05Encrypting Data At Rest
1.00
DCH-01Data Protection
1.00
IAC-21Least Privilege
1.00
END-04Malicious Code Protection (Anti-Malware)
0.50
END-04.1Automatic Antimalware Signature Updates
0.50

+5 more (top 10 by confidence shown)

NIST 800-530 mappings

No source states a mapping between these directly.

Also reachable in 2 hops (3) derived by us, not asserted by any source

Each of these is a route we composed by chaining published mappings. No publisher states a relationship between the two endpoints.

SI-3Malicious Code Protection
1.00
SI-3(2)Automatic Updates
1.00
SI-4(22)Unauthorized Network Services
1.00
NIST 800-1710 mappings

No source states a mapping between these directly.

Also reachable in 3 hops (5) derived by us, not asserted by any source

Each of these is a route we composed by chaining published mappings. No publisher states a relationship between the two endpoints.

3.14.1
1.00
3.14.2
1.00
3.14.3
1.00
3.14.4
1.00
3.14.5
1.00
CCI1 mapping
CCI-002624
1.00
NIST CSF 2.00 mappings

No source states a mapping between these directly.

Also reachable in 3 hops (7) derived by us, not asserted by any source

Each of these is a route we composed by chaining published mappings. No publisher states a relationship between the two endpoints.

PR.DS-01
1.00
PR.DS-02
1.00
PR.DS-10
1.00
DE.CM-09
0.50
ID.RA-01
0.50
ID.RA-08
0.50
PR.PS-02
0.50

Who does this work

8 NICE work roles and 7 EC-Council certifications.

This is an inference across published mappings, not a single claim by anyone. This check maps to a control, which maps to a Cybersecurity Framework outcome, which NIST assigns to the work roles below. EC-Council separately maps its certifications to those same roles.

A certification prepares someone for a role. It is not evidence that a holder is qualified, and neither NIST nor EC-Council has stated that any certification here addresses this check.

Work-role assignments published by NIST (NICE Framework Components 2.2.0 and the CSF 2.0 OLIR crosswalk). Certification mappings published by EC-Council.

Details

Check Text (C-278676r1192828_chk)

Verify the policy value for Computer Configuration >> Administrative Templates >> Windows Components >> Microsoft Defender Antivirus >> Scan >> Scan excluded files and directories during quick scans 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\Scan Criteria: If the value "QuickScanIncludeExclusions" is REG_DWORD = 1, this is not a finding. If the value is 0, this is a finding.

Fix Text (F-83115r1190766_fix)

Set the policy value for Computer Configuration >> Administrative Templates >> Windows Components >> Microsoft Defender Antivirus >> Scan >> Scan excluded files and directories during quick scans to "Enabled".