: When you install a Civil 3D Update or Service Pack, it generally applies to all installed language packs automatically, but it is best practice to check the "Updates" section in the Autodesk Desktop App (or Access) after adding a new language.
Looking to work in a different language in Civil 3D? Unlike standard AutoCAD, Civil 3D requires a specific installation process to switch your interface language. Reinstallation Required: civil 3d language pack