Plex Server Version 1.13.6.5339 on Windows Server 2016
Plex Player Version 2.17.0.890 on Windows 10 Pro 64 bit build 1803
Things appear to be getting worse instead of better.
I just updated both the Plex Media Server and Plex Media Play about 30 minutes ago, so both of these have been restarted. No matter what channel I try via the Grid guide using the Watch Now button I get Playback Error and Unable to tune channel (Not on air).
I have two HDHomeRun Connect Quad tuners and both just updated firmware tonight as well. I am notable to view any channel via the HDHomeRun app.
There is currently one recording in progress so the DVR function seems to not be affected, but I do have other issues getting NFL football games to schedule recording times and channels properly (see my other post I have about NFL games).
If I go to the old Guide data like using the Discover filter and choose what is ON RIGHT NOW, I have no problems at all to view Live TV at all.
The Grid Guide still needs work!!!