RequestedLocales

Set the list of requested locales for the application in order of preference. It will cause the corresponding language pack to become active.

Compatibility

Firefox	Firefox ESR	Firefox Enterprise
Available since 64	Available since 60.4.0	Available since 149

As of Firefox 68, this can be a string so that you can specify an empty value ("").

CCK2 Equivalent: N/A
OMA-URI: RequestedLocales
Preferences Affected: N/A

Examples

policies.json

{
  "policies": {
    "RequestedLocales": [
      "de",
      "en-US"
    ]
  }
}

JSON schema

RequestedLocales JSON schema

{
  "type": [
    "string",
    "array"
  ],
  "items": {
    "type": "string"
  }
}

Windows (GPO)

Software\Policies\Mozilla\Firefox\RequestedLocales\1 = "de"
Software\Policies\Mozilla\Firefox\RequestedLocales\2 = "en-US"

or

Software\Policies\Mozilla\Firefox\RequestedLocales = "de,en-US"

macOS

<dict>
  <key>RequestedLocales</key>
  <array>
    <string>de</string>
    <string>en-US</string>
  </array>
</dict>

or

<dict>
  <key>RequestedLocales</key>
  <string>de,en-US</string>
</dict>