The method for obtaining DirectX 11 depends on your version of Windows:
: If an older game requires specific DirectX 11 libraries that are missing, you can use the DirectX End-User Runtime Web Installer from Microsoft Support. This package installs legacy runtime libraries without modifying your core system version. Troubleshooting "DX11" Errors skachat draiver dlia directx 11
: DirectX 11 is included in Windows 7 and 8.1. You can ensure it is up to date by installing the latest Service Packs or platform updates via Windows Update. The method for obtaining DirectX 11 depends on