I had the same problem. It is really annoying, with every update comes more problems from increased complexity. Pain in the butt.
Anyway- here’s the fix that I found:
Go into PREFERENCES under OPTIONS
Go to AUDIO DEVICE
I changed to WINDOWS CLASSIC WAVE DRIVER—
That gave me my audio in the render.
Make sure when you render that you scroll down to CUSTOM TEMPLATE, open the AUDIO tab, and check mark
INCLUDE AUDIO.
That worked for me. The initial Audio Device would not work, including my Creative Sound Blaster 24bit card. I don’t know why, because it’s always worked before.