: Ensure the software is completely shut down before starting.
| Action | Why It Matters | | :--- | :--- | | | Do not open a drawing in Language A, then open the same drawing in Language B without closing AutoCAD first – can cause temp file conflicts. | | Reapply service packs | After installing a language pack, you may need to reinstall the latest AutoCAD 2018 update (e.g., 2018.1.2) for that language. | | Check command line | In some languages, command prompts change (e.g., _line becomes _ligne in French). Use the English alias L to avoid confusion. | | Uninstall order | To remove a language pack, first uninstall it via Control Panel → Programs and Features , then repair the base English version if needed. | autocad 2018 language packs install