Active Desktop was a feature of Microsoft Internet Explorer 4.0's optional Windows Desktop Update that allows the user to add HTML content to the desktop, along with some other features. This function was intended to be installed on the then-current Windows 95 operating system. It was also included in Windows 98 and later Windows operating systems until Windows Vista, where the feature was discontinued. This corresponded to version Internet Explorer 4.0 to 6.x, but not Internet Explorer 7.