<ul data-eligibleForWebStory="true">Windows 11 test builds were hit by a bug causing the Windows Vista startup sound to play instead of the usual one.The bug affected testers in the Beta and Dev channels, leading to confusion and nostalgia for those familiar with Windows Vista.Microsoft's Brandon LeBlanc confirmed the glitch and joked about it being a blast from the past.The bug was accidentally implemented by someone messing around with sound files in Windows 11, not as an intentional feature.The bug is being worked on for a fix as it was added as a known issue for the Dev channel preview build.The coincidence of the bug occurring after Microsoft mocked Apple's Liquid Glass interface adds an interesting twist to the situation.