Install+catia+v5+r21+on+windows+11+updated

Restart your PC (with Windows Defender re-enabled now, but add exclusions for the CATIA install folder and CNEXT.exe).

Launch CATIA:

Select your license (e.g., AL2, MD2, HD2) – if none appear, repeat the license activation step. install+catia+v5+r21+on+windows+11+updated

Create a new Part. Rotate a cube. If the graphics stutter, go to Tools > Options > General > Display > Performance – set “3D Accuracy” to Medium and disable “Anti-aliasing”. Restart your PC (with Windows Defender re-enabled now,


To make CATIA R21 run as fast on Windows 11 as it did on Windows 7: Select your license (e


  • Activate Internet Explorer 11 Compatibility: