Are you using a (Nvidia/AMD) or integrated graphics?
Right-click the CATIA V5 R21 icon and select . Go to Tools > Options inside the application. Navigate to General > Display > Performance . install catia v5 r21 on windows 11 fixed
Windows 11 may show a black command prompt window with a HighDPI message upon launch. Right-click your CATIA desktop shortcut and select Properties field, change the executable from CATSTART.exe while keeping the environment arguments intact. GoEngineer License Launch Errors If the software fails to recognize licenses on startup: Manual Pointer: Navigate to C:\ProgramData\DassaultSystemes\Licenses (this is a hidden folder). Text File: Create a file named DSLicSrv.txt . Inside, type your computername:4085 Are you using a (Nvidia/AMD) or integrated graphics
| Test | Expected Result | |------|----------------| | Launch CNEXT.exe | CATIA splash screen appears → blank part workspace opens in ~30 sec | | License check | Tools → Options → Licenses – at least one license (e.g., MD2, HD2) shows green | | Create a new Part | Sketch a rectangle → Pad → 3D model appears without graphical corruption | | Save & reopen | No crash, file opens correctly | Navigate to General > Display > Performance
If prompted, allow the Windows Compatibility Assistant to run the setup using settings for a previous version of Windows (e.g., Windows 7). At the end of the installation,
8 GB RAM (16 GB recommended), 20 GB free disk, dedicated GPU with full OpenGL support (NVIDIA Quadro or AMD Radeon Pro preferred).
Once installed, apply these "fixed" settings to prevent crashes and UI glitches: