Find CNEXT.exe again:
Back in the main Compatibility tab, check (just like you did for the installer). Check Run this program as an administrator and click Apply . Step 5: First-Time Launch and Optimization Double-click your modified CATIA V5 R21 shortcut. install+catia+v5+r21+on+windows+11+updated
Follow these steps in sequence to ensure the legacy installer handles the Windows 11 environment correctly. 1. Configure Installer Compatibility Find CNEXT
If the installer still blocks, use an to modify the MSI: use an to modify the MSI: