Absolute Max Cache Size (in GB): registry value DOAbsoluteMaxCacheSizeComputerHKLM\SOFTWARE\Policies\Microsoft\Windows\DeliveryOptimization

Policy ID: AbsoluteMaxCacheSize
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

DOAbsoluteMaxCacheSize

REG_DWORDComputer

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

Enabled value: Depends on the option value
Element: Absolute Max Cache Size (in GB):
Value type: REG_DWORD
Maximum value: 4294967295
Minimum value: 0

Apply with .reg · CMD · PowerShell

.reg

Windows Registry Editor Version 5.00

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

; Value names and types follow the ADMX. Replace <enter value> below with your own data
"DOAbsoluteMaxCacheSize"=dword:<enter value>

CMD

:: Value names and types follow the ADMX. Replace <enter value> below with your own data

reg add "HKLM\SOFTWARE\Policies\Microsoft\Windows\DeliveryOptimization" /v "DOAbsoluteMaxCacheSize" /t REG_DWORD /d "<enter value>" /f

PowerShell

# Value names and types follow the ADMX. Replace <enter value> below with your own data

New-Item -Path 'HKLM:\SOFTWARE\Policies\Microsoft\Windows\DeliveryOptimization' -Force | Out-Null
New-ItemProperty -Path 'HKLM:\SOFTWARE\Policies\Microsoft\Windows\DeliveryOptimization' -Name 'DOAbsoluteMaxCacheSize' -PropertyType DWord -Value '<enter value>' -Force | Out-Null