Requested locale

Supported on: Firefox 64 or later, Firefox 60.4 ESR or later

Registry

HKLM Software\Policies\Mozilla\Firefox

HKCU Software\Policies\Mozilla\Firefox

Options

List (registry values) list - list under Software\Policies\Mozilla\Firefox\RequestedLocales

Description

If this policy is enabled, you can specify a list of requested locales for the application in order of preference. It will cause the corresponding language pack to become active. If this policy is disabled or not configured, the application will use the default locale.