Windows XP, released by Microsoft in 2001, included a set of distinctive system sounds for actions such as logging on, receiving mail, and encountering an error. The error tone became familiar to millions of computer users during the system's long run as the world's most widely used desktop operating system. As early internet video and meme culture grew, creators began lifting the sound from the desktop into edits, using its familiar warning as shorthand for a wrong answer or failure. Its short length and instant recognition have kept it in regular use long after XP itself was retired.