Unlike many other drivers, DirectX on Windows 7 does not have a "check for updates" button within a dedicated app. Instead, it is tied directly to . To ensure you have the latest version:
Windows 7 the latest DirectX 12 Ultimate or DirectX 12 Agility SDK. The final version for Windows 7 is DirectX 11.2 (with some limited DirectX 12 titles supported via unofficial patches or specific game engines).