Microsoft introduced this notification chime with Windows 8 in 2012 and kept it in Windows 8.1, released in 2013, as part of a redesigned sound scheme for the new toast notification system. The tone played whenever an app raised a generic alert with no custom sound of its own. As Windows 8 faded from daily use, the chime lived on in soundboard libraries and meme edits, where creators use it to fake system popups or trigger nostalgia for the early 2010s PC era. Its softness is exactly why editors like it: it reads as authentic.