Windows Vista has replaced the Active Desktop with Windows Sidebar,
which also allows components to be added to the desktop. Windows XP
was the most recent Microsoft operating system to support Active Desktop.
It still provides the option to display Web pages and channels built with
Microsoft's Channel Definition Format (CDF) on the desktop.
Active Desktop was largely considered to be a failure, with one of the main
problems being its high use of system resources and reduction in system stability.