I have Audirvana Origin (and before that Studio). Audirvana should be listed in the Windows\settings\apps\installed apps. Click on the three dots (…) to uninstall.
“antiquated” but much better. Many times I had to reinstall Windows because of App Installer errors. Just for Audirvana. In fact many old Windows users call these MS$ new “sweets” (Store, Defender, telemetry) garbage. Roon, HQPlayer, JRiver, all of my apps doesn’t need them. Don’t blame Microsoft, blame Audirvana because don’t want to use a regular Installer. Just my 2 cents. Sorry for offtopic.