Force selected system UI language to overwrite the user UI language

This is a setting for computers with more than one UI language installed. If you enable this setting, the UI language of Windows menus and dialogs language for systems with more than one language will follow the language specified by the administrator as the system UI languages. The user UI language will be ignored.

Supported on: At least Windows Vista
Registry HiveHKEY_LOCAL_MACHINE
Registry PathSoftware\Policies\Microsoft\MUI\Settings
Value NameMachineUILock
Value TypeREG_DWORD
Enabled Value1
Disabled Value0

globalization.admx

Administrative Templates (Computers)

Administrative Templates (Users)