Dear Parallels team, Please help me with my issue. I can't solve it without you. ----- My today config: Host system is: MacOS Catalina 10.15.3 Parallels Desktop for Mac Pro Edition: version 15.1.2 (47123) ----- I was at macOS Mojave (version 10.14) and PD 15.1.2 - all worked good. The problem started when i have updated to Catalina 10.15.2. Now when i run more than one virturtual machines at the same time, system sound is not working! When i stop one of the running ones - sound returns back. If not returns, i kill the process coreaudiod in my host Catalina. It becomes killed, than MacOs restarts it automatically and sound returnes. The method with killing coreaudiod works if only one machine is still working. If two or more vm works, sound isn't returned even after killing of the coreaudiod process. I use your last Parallels Desktop for Mac distributive with 5 virtual machines with Ubuntu 18.04 and another MacOS Catalina 10.15.2. It is not matter what virtual os to start - sound disables when any two of them became "running" status. I tried to undestand the moment of sound disabling. When i click at button run and PD is restoring os from pause - sound is still working. But when a loading circle hides, system sound turns off. I don't know what to do because my working process became too hard: i don't hear sound of notifs and alerts from messangers in one virtual os when i work in another one. Today i have updated to Catalina 15.1.3 and nothing is happend. The problem is still remains. Please help me to solve the problem! Regards.