Officially, Dassault Systèmes supports V5 releases starting from on Windows 11. Older versions like R21 are not officially certified for Windows 11 but can still function through compatibility layers. OS: Windows 11 64-bit (Ensure it is fully updated).
Insert your CATIA V5 R21 installation media or open the software folder on your local drive. Install Catia V5 R21 On Windows 11
Installing on Windows 11 requires specific manual configurations, as this version was originally designed for older Windows environments like XP and 7. While modern versions like V5-6R2021 are officially supported on Windows 11, R21 can be successfully run using compatibility settings and prerequisite management. 1. System Prerequisites Install Catia V5 R21 On Windows 11