For awhile now, about once or twice a week I lose all sound on Windows 10 running on my MBP/Mac OS. This happens now on Parallels 13.0.1, but it has happened prior. A restart of Windows restores sound, but this is incredibly annoying. It happened this morning, and nothing was running over night (apps or anything I Have done I mean...) - Last night I ran Quicken, all was fine. This morning, no sound. I have checked: 1. No errors in Device Manager 2. Parallels Audio Control is visible there and without error 3. Using Windows Sound under Control Panel, clicking 'Test' for different sounds, shows nothing. Several apps have no sound that normally do. 4. Reinstall Parallels Tools doesn't fix it (a limited test of sorts, since it does require a restart which on its own will fix it. I tried doing 'Postpone' and testing sound, and there was none). 5. No errors or warnings that appear to indicate a problem in Event Log (in fact very few errors/warnings of any type as I don't use the VM much.) Is this a know issue, any ideas how to track down the issue, or chance it will be fixed or a config change can eliminate this problem? Thanks..