A Language Pack is a software add-on that transforms the user interface (UI) of AutoCAD 2021. Once installed, it translates menus, ribbons, tool tips, command line prompts, and documentation files into a target language.
%AppData%\Autodesk\AutoCAD 2021\R24.0\enu\Support (replace enu with your old language). Delete the *.cuix customization files. Restart AutoCAD; it will rebuild the menu.While installing and using the Language Pack AutoCAD 2021, users may encounter some common issues. Here are some troubleshooting tips: Language Pack Autocad 2021