Maxx stopped working for me when I upgraded from Win10 to 11. Found a fix. Had to uninstall the app; check Device Manager for "High Def Audio" (it wasn't there) to uninstall it. Found the Maxx/Realtek drivers on Dell & installed the Maxx. Rebooted PC and reinstalled Maxx from the Windows Store. Worked. Irritating to have to do since I'm not really good at doing anything but turning my PC on and using it. Glad it worked.