Knowing which version of DirectX is installed on a Windows computer is important because it helps ensure that the computer has the latest updates for gaming, video playback, and other multimedia applications. There are two main methods for checking the DirectX version: using the DirectX Diagnostic Tool or checking the system information.
The DirectX Diagnostic Tool is a built-in utility that provides detailed information about the DirectX components installed on a computer. To access the DirectX Diagnostic Tool, press the Windows key + R, type “dxdiag” into the Run dialog box, and then press Enter. The DirectX Diagnostic Tool will open and display information about the DirectX version, as well as other system information.