DayZ does not recognize any sound from my microphone. When pressing push-to-talk or using voice activation, the microphone symbol appears, but no sound comes from my character. (There are no "sound waves" appearing from the microphone symbol when I talk, and I had a friend confirm that they cannot hear me.) This problem has not been fixed with extensive troubleshooting.
(Rated severity as "major" because communication is an integral part of a game like DayZ)