Since AutoCAD 2018 is no longer in mainstream support (support ended April 2021), language packs are on Autodesk’s public download center. Access methods:
Finding and installing the AutoCAD 2018 Language Pack requires navigating the challenges of legacy software. While Autodesk no longer officially supports it, users can still locate these files through community resources, direct links, and web archives. Understanding the process, the limitations (especially for Mac and Japanese users), and the installation steps will help you successfully configure your AutoCAD 2018 to work in your preferred language. autocad 2018 language pack
How to run Advance Steel 2018 "Polish" on AutoCad 2018 "English" Since AutoCAD 2018 is no longer in mainstream