Double-click DXSETUP.exe and follow the prompts to complete the installation.

Open that folder and find the file named DXSETUP.exe .

The download is a critical collection of legacy libraries required to run older games and multimedia applications on modern Windows systems. While modern versions of Windows come with current DirectX runtimes pre-installed, they often lack the specific "side-by-side" components—such as D3DX9 , D3DX10 , D3DX11 , XAudio 2.7 , and XInput 1.3 —that older software depends on to function correctly. Why You Need the June 2010 Runtimes

Here’s a helpful, practical piece of advice regarding the download.

While Microsoft has moved on to DirectX 12 (and beyond), the remains a vital tool for any PC gamer who enjoys titles from the Windows XP, Vista, or Windows 7 eras. It is safe, lightweight, and provides the necessary bridge to play classic games on modern hardware.

The release was the final standalone version of the DirectX SDK (Software Development Kit) that Microsoft released before moving to a newer, integrated development cycle. Because it was the "final" major release of that era, it contains the specific libraries (DLL files) that thousands of games relied upon.