Run CNEXT.exe as administrator (desktop shortcut may fail – launch from bin folder directly).
After installation completes (do not launch yet): Install Catia V5 R21 On Windows 11
: Locate the setup.exe file within the extracted folder (typically in a subfolder named "1"). Right-click it and select "Run as administrator" to ensure it has the necessary permissions to modify system directories. Run CNEXT
Choose Complete (Full) installation.
: Ensure at least 10GB to 20GB of free space on an SSD for the installation and environment files. Step-by-Step Installation Process Install Catia V5 R21 On Windows 11
: Follow the installation wizard. It is highly recommended to keep the default installation path to avoid potential environment variable conflicts later.