Lost playback sound

I’m on Dorico 3.5.12 still. It seems to have stopped recognizing any output device? Is this a Dorico problem or a Windows problem? I don’t seem to have lost sound output anywhere else.

Please watch this tutorial video from around 13min 40s as it deals with exactly that case.

Ah, it was Windows. I changed the default audio format per in the video around 14:25. Windows 10’s interface is a bit different than what’s in the video (which is 3+ years old) but I was able to figure out the interface.