Alright, guys. I think I finally got WMC working on W10b1511 with the HDHR Prime 3 network tuner. I had issues along the way - see below:
DOWNLOAD FAILURE:
The new TV setup data could not be downloaded. The existing data, if available, will be used as you continue through TV signal setup.
Digital Tuner Setup:
The Digital Cable Advisor has determined that your computer is not capable of playing Digital Cable. Click Next to continue without enabling Digital Cable.
Update PlayReady:
The PlayReady update was incomplete. You will not be able to watch or record protected content until the update is successful.
After the above, I quickly tried a basic channel and it came up, but was falling asleep.
This morning, I found a Digital Cable Advisor install from 5 years ago (when I'd first tried WMC on W10). Installed it and configured it in WMC. I just tested a non-basic channel recording and it saved. I just hope the PlayReady issue doesn't haunt me. Not sure if it will.
Next step is configuring EPG123 with my Schedules Direct subscription I picked up in Jan. I'll report back.
mwpeterson, thanks for shaking me up there. You got me thinking clearly again.
*UPDATE*
Update PlayReady keeps failing. Says I can't record protected content. Thoughts?