This is the most user-friendly method for installing a .cab file. Press Win + R , type lpksetup.exe , and hit . Select Install display languages .

Microsoft does not provide a single "setup.exe" for language packs. Instead, they are distributed as files or Local Experience Packs (.appx) .

Once you have the .cab file (e.g., Microsoft-Windows-Client-LanguagePack-Package_en-US.cab ), use one of the following offline methods.