UPnP history Universal Plug and Play (UPnP) saw the light in the late 1990s. Networks were just becoming popular. Several vendors were coming up with solutions to make networks and networked applications easier to manage. One early attempt was Sun's JINI. As a reaction to JINI (or so I was told) Microsoft came with UPnP. The first Microsoft products to ship with UPnP were Windows Millenium Editio