Configure log access (legacy): registry value CustomSD (System)ComputerHKLM\System\CurrentControlSet\Services\EventLog\System

Policy ID: Channel_Log_FileLogAccess_8
Scope: Computer Configuration
Supported on: At least Windows Vista
Source: Administrative Templates (.admx) for Windows 11 2026 Update (26H2) (version 1.0)
Category: Windows Components › Event Log Service › System

Registry

CustomSD

REG_SZComputer

HKLM\System\CurrentControlSet\Services\EventLog\System Current key

Enabled value: Depends on the option value
Element: Log Access
Value type: REG_SZ

Apply with .reg · CMD · PowerShell

.reg

Windows Registry Editor Version 5.00

[HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\EventLog\System]

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

CMD

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

reg add "HKLM\System\CurrentControlSet\Services\EventLog\System" /v "CustomSD" /t REG_SZ /d "<enter value>" /f

PowerShell

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

New-Item -Path 'HKLM:\System\CurrentControlSet\Services\EventLog\System' -Force | Out-Null
New-ItemProperty -Path 'HKLM:\System\CurrentControlSet\Services\EventLog\System' -Name 'CustomSD' -PropertyType String -Value '<enter value>' -Force | Out-Null