Microsoft have released an updated version of DirectX 9.0C for the month of November 2008. Installing this update will ensure you have the most current, optimal and efficient DirectX 9 version currently available. Also, this is the perfect solution for those missing .dll files errors such as missing d3dx9d.dll , missing d3dx9_25.dll, and missing d3dx9_27.dll that pop up when trying to play newly released PC Games. Usually these errors pop up even when you have older monthly builds of DirectX 9.0c installed and installing the latest monthly Directx update is the best way to ensure maximum compatibility and performance.
You do not need to worry about the current DirectX version installed on your system. The installer is smart enough to update only the required files. These updates can be downloaded directly from Microsoft servers.
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.
At the core of DirectX are its application programming interfaces, or APIs. The APIs act as a kind of bridge for the hardware and the software to "talk" to each other. The DirectX APIs give multimedia applications access to the advanced features of high-performance hardware such as three-dimensional (3-D) graphics acceleration chips and sound cards. They control low-level functions, including two-dimensional (2-D) graphics acceleration; support for input devices such as joysticks, keyboards, and mice; and control of sound mixing and sound output. Because of DirectX, what you experience with your computer is better 3-D graphics and immersive music and audio effects.
There are two versions of the download. One is the web installer and the other is the full standalone DirectX installer. If you are planning to install DirectX 9.0c on multiple machines or wish to install it offline on a machine that has no internet connectivity, download the full redistributable
[Click Here] to download DirectX Redistributable 9.0c November 2008 (Web Installer) directly from Microsoft
[Click Here] to download DirectX Redistributable 9.0c SDK November 2008 full standalone installer directly from Microsoft (483MB)