Can't set Music Bee as default music player on Windows 10

[applesea]

Ever since the past few updates, I am unable to set Music Bee as the the default music player. It doesn't show up under settings.

[phred]

Ever since the past few updates

The last few -windows- updates, or the last few MB updates?

Either case, try white-listing MusicBee.exe in your AV/Security software and (if it works) report the issue to your AV developer.