I just had a Win 10 update change my audio output and like you I could not hear any of my MIDI tracks. If Mike's suggestion doesn't work check your audio inputs and outputs to make sure that the selected choices matches your audio interface.

Note - In my case I have the internal audio devices tuned off and use my external Roland Octa-Capture as my audio interface. Win 10 reset my BiaB audio to the motherboard audio interface which was off!

Good luck


Life is short so make sure you spend as much time as possible on the Internet arguing with strangers.

64 bit Win 10 Pro, the latest BiaB/RB, Roland Octa-Capture audio interface, a ton of software/hardware