Available Language Packs for Windows | Microsoft Learn
learn.microsoft.com › en-us › windows-hardwareJan 7, 2022 · Language/region- The name of the language that will be displayed in the UI. All Windows language packs are available for Windows Server. In Windows Server 2012 and later the user interface (UI) is localized only for the 18 languages listed in bold. Language/region tag- The language identifier based on the language tagging conventions of RFC 3066. This setting is used with the Deployment Image Servicing and Management (DISM) tool, or in an unattended answer file.