Windows XP, released by Microsoft in 2001, shipped with a set of system sounds designed to make everyday actions feel familiar, and the logoff chime was one of them. It played whenever a user signed out, distinguishing that moment from a full shutdown. As XP became one of the most widely used versions of Windows, the sound became instantly recognisable to a generation of computer users. Today it survives mainly through nostalgia, reused in videos, streams and memes that recreate the early 2000s desktop experience.