Welcome to the SDK Update Site
The Microsoft® Platform Software Development Kit (SDK) contains the information you need to develop applications for Microsoft Windows®. This edition of the SDK supports development for the following platforms:
Windows Server 2003
Windows Advanced Server, Limited Edition
Windows XP 64-bit Edition
Windows NT® versions 3.51 and 4.0
Windows Millennium Edition
Windows 95 and Windows 98
Use SDK Update to ensure that you have the latest documentation, samples, and SDK build environment (header files, libraries, and tools).
SDK Update saves you time and hard disk space by dividing the Platform SDK into component SDKs that you can download separately. For example, to obtain the latest SDK content for Microsoft DirectX®, download only the DirectX SDK. Furthermore, you can separately install documentation, samples, the build environment, or any combination of this content.
The available SDKs are listed in the left pane. To install multiple SDKs for Windows, choose Windows SDK. You can also install multiple SDKs by choosing Install from the Downloads menu.
The Windows Media® SDK components, with one exception, and .NET Enterprise Server SDKs are no longer available through the Platform SDK. The exception mentioned above is the Windows Media Services SDK, which is still currently available through the Platform SDK. To download the rest of the Windows Media SDK components from MSDN, choose Windows Media SDK in the left pane. To download the .NET Enterprise Server SDKs from MSDN, choose .NET Enterprise Servers SDKs in the left pane.