Your graphics card must support to use DirectX 12 Ultimate. NVIDIA : GeForce RTX 20 series or newer. AMD : Radeon RX 6000 series or newer. Intel : Intel Arc A-series or newer Iris Xe graphics. 2. Update Your Graphics Drivers
If your hardware is compatible but it shows as "Disabled," follow these steps: How to enable DirectX 12 Ultimate in Windows 11? how to enable directx 12 ultimate in windows 11
Windows 11 includes a native tool to verify if DirectX 12 Ultimate is active and ready. Your graphics card must support to use DirectX 12 Ultimate
Unlike Windows 10 (which technically supports DX12 Ultimate but with spotty OS-level integration), Windows 11 was built for it. Windows 11 was built for it.