UILanguage specifies the language to install that will be used as the default system language to display user interface (UI) items (such as menus, dialog boxes, and help files).
This setting is used by Windows Setup and Windows Deployment Services.
This setting can be applied only during the windowsPE configuration pass. To specify language and locale settings during the oobeSystem or specialize pass, see the UILanguage setting in the Microsoft-Windows-International-Core component.
For the list of supported languages, see Supported Language Packs and Default Settings.
This setting is required for all unattended installations. To prevent the Windows Setup UI from displaying, you must configure this setting. For a complete list of required settings, see Settings to Use for an Unattended Installation.
In upgrade installation types, this setting is ignored. In upgrade installations, you can upgrade only from the same language.
Specifies the language of the UI.
UI_language is a string based on the language-tagging conventions of RFC 3066. The pattern language-region is used, where language is an ISO-639 language code and region is an ISO 3166-1 country or region identifier, for example, en-US, fr-FR, or es-ES.
This value is not case-sensitive.
This string type supports empty elements.
Microsoft-Windows-International-Core-WinPE | UILanguage
For the list of the supported Windows editions and architectures that this component supports, see Microsoft-Windows-International-Core-WinPE.
This setting is available to OEMs and system builders.
The following XML output shows how to set the UI language to German (Germany).
<InputLocale>0407:00000407</InputLocale> <SystemLocale>de-DE</SystemLocale> <UILanguage>de-DE</UILanguage> <UserLocale>de-DE</UserLocale>