Though bugs showing up in Windows updates is no surprise anymore, a startup sound from 2007 suddenly making a return nearly two decades later is still a bit strange. But Microsoft is full of surprises, and that’s exactly what happened.
Last Monday, we reported on an odd issue in Windows 11’s latest Beta and Dev channel builds, where the iconic Windows Vista startup chime resurfaced out of nowhere. Microsoft acknowledged the bug and even leaned into the nostalgia a bit when the issue was first spotted, and promised a fix.
Credit where credit is due, Microsoft did indeed stick to its word and tried to patch things up in the latest Windows 11 Preview Builds released earlier this week. Unfortunately, the Redmond-based giant only partially succeeded.
The Vista sound is still lingering in the Dev Insider build
Microsoft rolled out the Windows 11 Insider Preview Build 26120.4452 and Build 26200.5661 for the Beta and Dev channels, respectively, earlier this week on Monday. Initially, the “Fixes for everyone in the Beta/Dev channel” section mentioned: Fixed the issue causing the Windows Vista boot sound to play instead of the Windows 11 boot sound.
Although this was great news, Microsoft updated the release notes of the Dev build the very next day on Tuesday, after realizing that the fix for the issue was “not working correctly in this build.” It further mentioned that the issue will be fixed in the next flight.
There’s been no update to the Beta release notes yet, suggesting that the fix is working as anticipated.
If you aren’t familiar with the bug we’re referring to here, a Windows Insider, @XenoPanther on X (formerly Twitter), spotted a bug that swapped the Windows 11 startup sound with Vista’s startup sound. This issue was found in the Windows 11 Insider Preview Build 26120.4441 and 26200.5651 for the Beta and Dev channels.
Like a true tech enthusiast, he went on a quest to trace down the cause of the bug and determined that the .WAV file located inside the imageres.dll.mun resource file was the culprit. It previously had the Windows 11 startup sound and had been replaced with Vista’s.
Vista nostalgia or an indirect dig at Apple?
Though most would've likely disregarded it and forgotten about it as yet another silly Microsoft bug (despite the years), what truly raised eyebrows was the timing of the bug. It was spotted around a week after WWDC 2025, where Apple announced its new operating systems alongside its "Liquid Glass" UI design.
Though the redesign was certainly refreshing for Apple users who've grown tired of staring at the same old design, it felt like a step back in time to many. This was because Microsoft first debuted similar translucent glass effects with its Windows Aero theme in Windows Vista.
Brandon LeBlanc, the Senior Product Manager for the Windows Insider Program Team, replied to @XenoPanther’s X post and mentioned that Microsoft had added the issue as a known issue.
In the replies, when asked how it happened, LeBlanc jokingly mentioned that he “went in and had some fun with the sound files in Windows and thought folks wanted a blast from the past.”
I went in and had some fun with the sound files in Windows and thought folks needed a blast from the past 😉 You did say how much you loved Vista.June 13, 2025
Though LeBlanc was clearly joking around, people were still unsure if it was a genuine bug or an actual blast from the past, so he clarified that it’s an actual bug.
Whether an intentional bug or not, the sudden return of Vista’s startup sound just days after Apple debuted a design that looks suspiciously similar to Aero feels a little too well-timed to be pure accident.
Given that this strangely seems to be one of those bugs Windows Insiders aren’t too mad about, it’s also one of those rare times when Microsoft not having a proper fix isn’t bothering people all that much. If you're one of those affected and waiting for a fix, the only thing you can really do for now is sit tight for the next build, and maybe enjoy the nostalgia in the meantime.
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