Installing CATIA V5R21 on Windows 11 is a testament to the longevity of high-end engineering tools. While the software was never intended for a touch-enabled, highly secure OS like Windows 11, it can remain functional through the diligent application of compatibility layers and administrative tweaks. For engineers maintaining legacy data, this setup allows for the continued use of a powerful design tool without the need to maintain outdated hardware.
Check Override high DPI scaling behavior and select System (Enhanced). install+catia+v5+r21+on+windows+11+updated
Navigate to C:\DS\CATIAV5R21\B21\intel_a\code\bin\ Installing CATIA V5R21 on Windows 11 is a