Install Catia V5 R21 On Windows 11 [new] -

If CATIA crashes immediately upon opening, it is usually a graphics driver conflict.

Once the installer finishes, the box that says "Launch CATIA V5 R21 now" and click Finish . You must configure the application executable before running it for the first time. Applying Compatibility to the Main Executable Install Catia V5 R21 On Windows 11