Microsoft DirectX is a group of technologies designed to make Windows-based computers an ideal platform for running and displaying applications rich in multimedia elements such as full-color graphics, video, 3D animation, and rich audio. DirectX includes security and performance updates, along with many new features across all technologies, which can be accessed by applications using the DirectX APIs.

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DirectX Redistributable for WinXP/XP x64/Vista/Vista x64 (48.9MB)
This download provides the DirectX end-user multi-languaged redistributable that developers can include with their product. The redistributable license agreement covers the terms under which developers may use the Redistributable. For full details please review the DirectX SDK EULA.txt and DirectX Redist.txt files located in the license directory.

DirectX SDK for WinXP/XP x64/Vista/Vista x64 (441,2 MB)
This DirectX SDK release contains updates to tools, utilities, samples, documentation, and runtime debug files for x64 and x86 platforms.