<ul data-eligibleForWebStory="true">Microsoft accidentally replaced Windows 11's boot sound with Windows Vista's startup chime in a recent Dev Channel build.The issue was noticed by Windows testers after the release of the latest Windows 11 build.The .WAV file for the bootup sound was found to be switched with Windows Vista's startup sound.Microsoft acknowledged the mistake and mentioned it in the release notes for the Dev Channel build.They are working on a fix for this issue.Brandon LeBlanc from the Windows Insider team jokingly mentioned being responsible for the sound swap, clarifying that it was a bug.The cause of the error remains unclear, but it seems to be an unintentional change.This incident coincides with comparisons made by Microsoft between Apple's new design and Windows Vista's Aero Glass look.The accidental replacement of the Windows 11 boot sound with Windows Vista's chime has caused confusion among users.Windows 11 testers were surprised by the sudden change in the startup sound.Microsoft is striving to resolve the issue promptly.The mistaken switch of the boot sound led to an unexpected nostalgic moment for Windows users.The mix-up resulted in an interesting diversion for Windows enthusiasts.The incident serves as a reminder of past Windows versions and their distinctive sounds.The error highlights the challenges of software development and testing, even for a company like Microsoft.Despite the mix-up, Microsoft's Windows team is dedicated to rectifying the boot sound issue for Windows 11 users.