Once installed, changing the language is not done in the "Preferences" menu (ironically). Instead:
This is almost always due to a language version mismatch as described above. The solution is to , as shown in your License Management account.
As of 2026, the process for obtaining localized versions is standardized through the Graphisoft website. Step-by-Step Installation Process archicad language pack
Imagine your New York-based firm receives a native .pln or .ifc file from a partner in France. You open it, and all the layer names, complex profiles, and zone categories are in French. Even worse, the Attribute Manager shows Cloison instead of Wall , and Fenêtre instead of Window . By installing the French Archicad Language Pack, you can temporarily switch your UI to French. This allows you to see the attributes as the original author intended, making translation and coordination significantly easier.
Before buying (if not free with your license), confirm your license allows language switching – some country‑specific licenses lock you to one language. For free built‑in languages, check the “Language” dropdown during ArchiCAD installation first. Once installed, changing the language is not done
The Ultimate Guide to ArchiCAD Language Packs: How to Download, Install, and Switch Languages
Most commercial licenses (especially hardware-based dongles) allow you to run the INT version alongside your regional version. As of 2026, the process for obtaining localized
A common pitfall for advanced users is confusing the Interface Language with the Project Language.