Cache Server Hostname Source: registry value DOCacheHostSourceComputerHKLM\SOFTWARE\Policies\Microsoft\Windows\DeliveryOptimization

Policy ID: CacheHostSource
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

DOCacheHostSource

REG_DWORDComputer

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

Enabled value: Depends on the option value
Element: Cache Server Hostname Source:

Options
Item	Stored value
DHCP Option 235	1
DHCP Option 235 Force	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)
; DHCP Option 235
"DOCacheHostSource"=dword:00000001
; DHCP Option 235 Force
"DOCacheHostSource"=dword:00000002

CMD

:: Options (use only one)

:: DHCP Option 235
reg add "HKLM\SOFTWARE\Policies\Microsoft\Windows\DeliveryOptimization" /v "DOCacheHostSource" /t REG_DWORD /d 1 /f
:: DHCP Option 235 Force
reg add "HKLM\SOFTWARE\Policies\Microsoft\Windows\DeliveryOptimization" /v "DOCacheHostSource" /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)
# DHCP Option 235
New-ItemProperty -Path 'HKLM:\SOFTWARE\Policies\Microsoft\Windows\DeliveryOptimization' -Name 'DOCacheHostSource' -PropertyType DWord -Value 1 -Force | Out-Null
# DHCP Option 235 Force
New-ItemProperty -Path 'HKLM:\SOFTWARE\Policies\Microsoft\Windows\DeliveryOptimization' -Name 'DOCacheHostSource' -PropertyType DWord -Value 2 -Force | Out-Null