Suddenly I don’t have sound in Hearthstone. I’ve tried everything, from shutting down Windows to tinkering with the sound options.
There’s sound in all games but Hearthstone. There’s sound in all other Battle net games as well.
I solved this:
Run the game in Windowed Mode, then click on the Volume mixer settings in Windows. You should see the volume scale for Hearthstone. Click on it to restore the sound.