STIGQter: STIG Summary: Microsoft Windows 11 Security Technical Implementation Guide Version: 2 Release: 8 Benchmark Date: 01 Jul 2026:

Windows Update must not obtain updates from other PCs on the internet.

DISA Rule

SV-253394r1210294_rule

Vulnerability Number

V-253394

Group Title

SRG-OS-000480-GPOS-00227

Rule Version

WN11-CC-000206

Severity

CAT III

CCI(s)

• CCI-000366 - Implement the security configuration settings.

Weight

10

Fix Recommendation

For GPO-managed systems:

Configure the policy value for Computer Configuration >> Administrative Templates >> Windows Components >> Delivery Optimization >> "Download Mode" to "Enabled" with any option except "Internet" selected.

Acceptable selections include:
Bypass (100)
Group (2)
HTTP only (0)
LAN (1)
Simple (99)

For Intune-managed systems:

Revise the Intune policy to enable Download Mode for Delivery Optimization.

Check Contents

If the following registry value does not exist or is not configured as specified, this is a finding:

Registry Hive: HKEY_LOCAL_MACHINE
Registry Path: \SOFTWARE\Policies\Microsoft\Windows\DeliveryOptimization\ (For GPO-managed systems)
Or
Registry Path: \Software\Policies\Microsoft\Windows\DeliveryOptimization!DODownloadMode (For Intune-managed systems)

Value Name: DODownloadMode

Value Type: REG_DWORD
Value: 0x00000000 (0) - No peering (HTTP Only)
0x00000001 (1) - Peers on same NAT only (LAN)
0x00000002 (2) - Local Network / Private group peering (Group)
0x00000063 (99) - Simple download mode, no peering (Simple)
0x00000064 (100) - Bypass mode, Delivery Optimization not used (Bypass)

A value of 0x00000003 (3), Internet, is a finding.

Standalone systems (configured in Settings):

If the following registry value does not exist or is not configured as specified, this is a finding:

Registry Hive: HKEY_LOCAL_MACHINE
Registry Path: \SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Config\ (For GPO-managed systems)
Or
Registry Path: \SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Config!DODownloadMode (For Intune-managed systems)

Value Name: DODownloadMode

Value Type: REG_DWORD
Value: 0x00000000 (0) - Off
0x00000001 (1) - LAN

Vulnerability Number

V-253394

Documentable

False

Rule Version

WN11-CC-000206

Severity Override Guidance

If the following registry value does not exist or is not configured as specified, this is a finding:

Registry Hive: HKEY_LOCAL_MACHINE
Registry Path: \SOFTWARE\Policies\Microsoft\Windows\DeliveryOptimization\ (For GPO-managed systems)
Or
Registry Path: \Software\Policies\Microsoft\Windows\DeliveryOptimization!DODownloadMode (For Intune-managed systems)

Value Name: DODownloadMode

Value Type: REG_DWORD
Value: 0x00000000 (0) - No peering (HTTP Only)
0x00000001 (1) - Peers on same NAT only (LAN)
0x00000002 (2) - Local Network / Private group peering (Group)
0x00000063 (99) - Simple download mode, no peering (Simple)
0x00000064 (100) - Bypass mode, Delivery Optimization not used (Bypass)

A value of 0x00000003 (3), Internet, is a finding.

Standalone systems (configured in Settings):

If the following registry value does not exist or is not configured as specified, this is a finding:

Registry Hive: HKEY_LOCAL_MACHINE
Registry Path: \SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Config\ (For GPO-managed systems)
Or
Registry Path: \SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Config!DODownloadMode (For Intune-managed systems)

Value Name: DODownloadMode

Value Type: REG_DWORD
Value: 0x00000000 (0) - Off
0x00000001 (1) - LAN

Check Content Reference

M

Target Key

5471