on how to troubleshoot a language pack that isn't appearing in your Autodesk Account AutoCAD Architecture 2023 Language Packs - Autodesk
Your installed AutoCAD version (e.g., Update 1.2) does not match the language pack version (e.g., Base Release). Solution: Update your base AutoCAD 2023 to the latest service pack via Autodesk Desktop App, then re-download the language pack.
Before attempting to install a full language pack for AutoCAD 2023, ensure your system meets the following criteria: