Some language packs do not include offline help files. You may be redirected to the web version of Help. To fix this, download the separate package for your specific language from the same Autodesk account page.
. Unlike older versions where you might need to download a massive, entirely separate installer for a different language, the 2021 packs were streamlined. You could download the specific language "add-on," run it, and immediately have a new desktop icon for "AutoCAD 2021 - [Language]." Language Pack Autocad 2021
To use AutoCAD 2021 in a different language, you must first have the core product installed and then apply a specific language pack. These packs change the user interface and documentation without duplicating the entire software. How to Download the Language Pack Some language packs do not include offline help files
While the system is efficient, there are specific limitations and known issues within the 2021 version: Does exist language package to Autocad 2021 for MAC? These packs change the user interface and documentation