You are mixing:
Para obtener y activar este archivo, puedes seguir estos pasos basados en recursos de la comunidad de Autodesk Support : descargar autocad cl%C3%A1sico 9.1 cuix
You are looking for a .cuix file (Customization User Interface). The standard name usually used by the community is Classic.cuix or AutoCAD_Classic.cuix . You are mixing: Para obtener y activar este
If "9.1" refers to a specific crack, patch, or unofficial release, be very careful. Files shared under those names on file-sharing sites often contain malware. It is safer to use the official AutoCAD trial and the community-shared .cuix file method described above. or unofficial release
Once you have the .cuix file saved to your computer (e.g., in your Documents folder), follow these steps inside AutoCAD: