Legacy Update: Get back online, activate, and install updates on your legacy Windows PC

The Platform SDK for Microsoft® Windows® Server 2003 SP1 contains the information and tools you need to develop Windows-based applications. You can use this SDK to develop both 32- and 64-bit applications.

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  NOTE: This version of the Platform SDK has been superceded by the Windows SDK for Windows Server 2008 and .NET Framework 3.5. This version of the Windows SDK is available as either a
  • Web Install or
  • DVD ISO image
  
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  This is no longer the most recent edition of the Platform SDK. The Microsoft® Windows® Software Development Kit (SDK) provides the documentation, samples, header files, libraries, and tools you need to develop applications that run on Windows. The applications you develop with this edition of the SDK can run on the x86, x64 and Itanium-based versions of Windows Server 2003 SP1, Windows XP SP2, Windows XP x64 Pro Edition, and Windows 2000. A new custom install allows you to select components you wish to install on a more granular level.
  
  This edition of the SDK replaces the previous SDKs for Windows XP SP2 and Windows Server 2003 and can be used to develop applications for those platforms.
  
  This SDK is also available as a low-cost CD. You can also order some of the legacy releases of the SDK at the site. To order a CD, click Order

Files

Status: Deleted This download is no longer available on microsoft.com. The downloads below are archives provided by the Internet Archive Wayback Machine from the Microsoft Download Center prior to August 2020.

File	Size
PSDK-amd64.exe SHA1: 355506e89d83b4237e0e24f0e0df9432e544698d	1.23 MB
PSDK-ia64.exe SHA1: 7c5a5eb3916181b2ac54597d4b52cf0f91293279	1.28 MB
PSDK-x86.exe SHA1: a42fd342c45f71efe192aa49d9a8a50c1d8a39db	1.21 MB

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  • Hard Disk Space. Choose a disk drive with a minimum of 1 GB of free space.
  
  
  
  • High-Speed Internet Connection. If your connection speed is 56 Kbps or less, it is best to purchase the low-cost SDK CD (US/Canada or International) or install the Web Download.
  
  
  
  • Development Tools. To build the C/C++ samples, you must have a C/C++ compiler. If you are using Microsoft Visual C/C++®, run it at least once before installing the SDK. This will ensure that the environment variables are correctly configured. To build the Visual Basic samples, you must have Microsoft Visual Basic®. This SDK does not support working with Microsoft Visual C/C++®, 6.0 as support for VC 6.0 has ended. The last SDK that will work with VC 6.0 is the February 2003 Edition, you can order a CD on the fulfillment site. Side by side installations are not supported.

• • To run the installation program over the Internet, choose to download the Platform SDK for Windows Server 2003 SP1 Web Install. The installation program will install the components you select. Please select the appropriate executable for your hardware platform. For example PSDK-x86.exe for x86 platforms. (You can target other platforms.)
  
  
  
  • To download the Platform SDK in 25-MB packages and run the installation program locally, choose Platform SDK for Windows Server 2003 SP1 Full Download. The installation program will install the components you select.
  
  
  
  • To download images that you can burn to a CD, choose Platform SDK for Windows Server 2003 SP1 ISO Image Download.
  
  
  
  • For more information, see the FAQ.