Select a method to restrict Peer Selection: registry value DORestrictPeerSelectionByComputerHKLM\SOFTWARE\Policies\Microsoft\Windows\DeliveryOptimization

Policy ID: RestrictPeerSelectionBy
Scope: Computer Configuration
Supported on: At least Windows Server 2016, Windows 10
Source: Administrative Templates (.admx) for Windows 11 2026 Update (26H2) (version 1.0)
Category: Windows Components › Delivery Optimization

Registry

DORestrictPeerSelectionBy

REG_DWORDComputer

HKLM\SOFTWARE\Policies\Microsoft\Windows\DeliveryOptimization Current key

Enabled value: Depends on the option value
Element: Restrict Peer Selection By:

Options
Item	Stored value
None	0
Subnet mask	1
Local discovery (DNS-SD)	2

Apply with .reg · CMD · PowerShell

.reg

Windows Registry Editor Version 5.00

[HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Windows\DeliveryOptimization]

; Options (use only one)
; None
"DORestrictPeerSelectionBy"=dword:00000000
; Subnet mask
"DORestrictPeerSelectionBy"=dword:00000001
; Local discovery (DNS-SD)
"DORestrictPeerSelectionBy"=dword:00000002

CMD

:: Options (use only one)

:: None
reg add "HKLM\SOFTWARE\Policies\Microsoft\Windows\DeliveryOptimization" /v "DORestrictPeerSelectionBy" /t REG_DWORD /d 0 /f
:: Subnet mask
reg add "HKLM\SOFTWARE\Policies\Microsoft\Windows\DeliveryOptimization" /v "DORestrictPeerSelectionBy" /t REG_DWORD /d 1 /f
:: Local discovery (DNS-SD)
reg add "HKLM\SOFTWARE\Policies\Microsoft\Windows\DeliveryOptimization" /v "DORestrictPeerSelectionBy" /t REG_DWORD /d 2 /f

PowerShell

# Common: create the key
New-Item -Path 'HKLM:\SOFTWARE\Policies\Microsoft\Windows\DeliveryOptimization' -Force | Out-Null

# Options (use only one)
# None
New-ItemProperty -Path 'HKLM:\SOFTWARE\Policies\Microsoft\Windows\DeliveryOptimization' -Name 'DORestrictPeerSelectionBy' -PropertyType DWord -Value 0 -Force | Out-Null
# Subnet mask
New-ItemProperty -Path 'HKLM:\SOFTWARE\Policies\Microsoft\Windows\DeliveryOptimization' -Name 'DORestrictPeerSelectionBy' -PropertyType DWord -Value 1 -Force | Out-Null
# Local discovery (DNS-SD)
New-ItemProperty -Path 'HKLM:\SOFTWARE\Policies\Microsoft\Windows\DeliveryOptimization' -Name 'DORestrictPeerSelectionBy' -PropertyType DWord -Value 2 -Force | Out-Null