Thank you so much for this. This may be the first actual solution to a problem I have encountered on this site. LEGEND!!!
Actually it doesn't solve anything because the next thing people ask when they got to the old mmsys.cpl sound control panel is asking where is the missing enhancement tab. Why can't they find the equalizer or the mic's noise suppression which had been on the mmsys.cpl's enhancement tab?
The actual solution has always been that all computers with modern DCH audio drivers (which are computers made in 2018 and later and therefore all eligible for Windows 11 upgrade) should use your audio driver's configuration app (downloaded via Microsoft Store) to do all audio configurations, which in 90% of the case it will be the Realtek Audio Console, Dell Audio app, HP Audio app, B&O Audio app, Waves MaxxAudio Pro app...
