Windows From Start, type dxdiag in the Search box, and then press enter. Tap or click on dxdiag from the results. Check DirectX Version on the first page of the report in the System Information section. Feb 20, · The Microsoft DirectX® End-User Runtime installs a number of runtime libraries from the legacy DirectX SDK for some games that use D3DX9, D3DX10, D3DX11, XAudio , XInput , XACT, and/or Managed DirectX Note that this package does not modify the DirectX Runtime installed on your Windows OS in any way.
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