Install Catia V5 R21 On Windows 11 Access

| Component | CATIA V5 R21 Requirement | Windows 11 Environment | Compatibility Status | |-----------|--------------------------|------------------------|----------------------| | OS Version | Windows 7 (32/64-bit) | Windows 11 (64-bit only) | Not officially supported | | .NET Framework | v3.5 SP1 | v4.8+ (v3.5 optional feature) | Compatible (needs activation) | | Visual C++ Redist | 2005, 2008 | 2015-2022 redist installed | Partial (legacy runtimes missing) | | License Server (DSLS) | v6.1.R21 | Windows 11 | Requires compatibility mode | | Graphics API | OpenGL 2.1 | DirectX 12 / OpenGL 4.6 | Backward compatible |

Verdict: Installation is possible but requires manual intervention, compatibility settings, and potentially disabling certain security features.

If you experience crashes, install CATIA V5 R21 inside a Windows 10 virtual machine: Install Catia V5 R21 On Windows 11

But if you want native install, continue below.

Warning: CATIA is commercial software — ensure you have a valid license and follow your organization’s IT and licensing policies. Installing pirated software is illegal and unsafe. | Component | CATIA V5 R21 Requirement |

Installation Type: Select "Complete" (recommended for most users) or "Custom" if you know specifically which workbenches you need.

Server Configuration:

Click Install and wait for the process to finish. It may take 15–30 minutes.

In the Custom installation window, select the components you need to install. Typically, you'll want to install:

Choose a suitable installation location, such as C:\Program Files\Dassault Systemes\CATIA\V5R21. But if you want native install, continue below

If using local DSLS v6.1.R21 on Windows 11: