Restrict user locales: registry value RestrictUserLocales and 1 more (HKCU International)UserHKCU\Software\Policies\Microsoft\Control Panel\International

Policy ID: LocaleUserRestrict_1
Scope: User Configuration
Supported on: At least Windows Vista
Source: Administrative Templates (.admx) for Windows 11 2026 Update (26H2) (version 1.0)
Category: System › Locale Services

Registry

RestrictUserLocales

REG_DWORDUser

HKCU\Software\Policies\Microsoft\Control Panel\International Current key

Enabled value: 1
Disabled value: 0

Apply with .reg · CMD · PowerShell

.reg

Windows Registry Editor Version 5.00

[HKEY_CURRENT_USER\Software\Policies\Microsoft\Control Panel\International]

; Options (use only one)
; Enabled
"RestrictUserLocales"=dword:00000001
; Disabled
"RestrictUserLocales"=dword:00000000

CMD

:: Options (use only one)

:: Enabled
reg add "HKCU\Software\Policies\Microsoft\Control Panel\International" /v "RestrictUserLocales" /t REG_DWORD /d 1 /f
:: Disabled
reg add "HKCU\Software\Policies\Microsoft\Control Panel\International" /v "RestrictUserLocales" /t REG_DWORD /d 0 /f

PowerShell

# Common: create the key
New-Item -Path 'HKCU:\Software\Policies\Microsoft\Control Panel\International' -Force | Out-Null

# Options (use only one)
# Enabled
New-ItemProperty -Path 'HKCU:\Software\Policies\Microsoft\Control Panel\International' -Name 'RestrictUserLocales' -PropertyType DWord -Value 1 -Force | Out-Null
# Disabled
New-ItemProperty -Path 'HKCU:\Software\Policies\Microsoft\Control Panel\International' -Name 'RestrictUserLocales' -PropertyType DWord -Value 0 -Force | Out-Null

AllowableUserLocaleTagList

REG_SZUser

HKCU\Software\Policies\Microsoft\Control Panel\International Current key

Enabled value: Depends on the option value
Element: User Locales
Value type: REG_SZ
Maximum length: 200

Apply with .reg · CMD · PowerShell

.reg

Windows Registry Editor Version 5.00

[HKEY_CURRENT_USER\Software\Policies\Microsoft\Control Panel\International]

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

CMD

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

reg add "HKCU\Software\Policies\Microsoft\Control Panel\International" /v "AllowableUserLocaleTagList" /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 'HKCU:\Software\Policies\Microsoft\Control Panel\International' -Force | Out-Null
New-ItemProperty -Path 'HKCU:\Software\Policies\Microsoft\Control Panel\International' -Name 'AllowableUserLocaleTagList' -PropertyType String -Value '<enter value>' -Force | Out-Null