Check and select Windows 7 or Windows XP (Service Pack 3) .
Avoid long folder paths or special characters in the folder name to prevent read errors during setup. 2. Run the Setup in Compatibility Mode Install Catia V5 R21 On Windows 11
Check and click Apply . 3. Execute the Installation Double-click setup.exe to begin. Check and select Windows 7 or Windows XP (Service Pack 3)
Find the on your desktop or in the installation directory ( .../win_b64/code/bin/CNEXT.exe ). Right-click the shortcut → Properties → Compatibility . Install Catia V5 R21 On Windows 11
Extract your CATIA V5 R21 installation files into a folder on your local drive (e.g., C:\CATIA_Install ).