"Windows Presentation Foundation", "Windows Communication Foundation", and "Windows Workflow Foundation" are the names for three strategic developer technologies that Microsoft plans to ship in 2006 as part of the Windows Vista operating system. In addition, Microsoft is making these technologies available on Windows XP and Windows Server 2003. The WinFX Runtime Components December CTP enables developers to continue experimenting with early builds of these technologies, get acquainted with the development experience, and provide Microsoft with feedback. More details about these technologies are below.

To start the installation process, you will need to run the download file; this will initiate the installation of the WinFX Runtime Components December CTP; If you have troubles with the download manager, you can download the entire package for x86 or for x64 which are both .EXE files. This CTP release supports Visual Studio 2005 RTM and the .NET Framework 2.0 RTM. The Microsoft® WinFX® SDK contains documentation, samples, and tools designed to help you develop managed applications and libraries using WinFX. You can install the SDK that corresponds to this release here.