=I have been having the same issue for at least a month. Usually it happened a few days after installing an update. The DVR would stop recording, and if I tried live TV I would get the error “Could not tune channel.”
I have a HDHomeRun DUAL. I tried reinstalling the software for that, reboot and Plex seemed to work for a couple more days. Then the same issue with the DVR not recording and not able to tune channel. The HD Home run software can tune and view the channels with no problem.
With the latest update (1.21.0.3616) LIve TV and DVR does not work at all. I have taken the suggestions above and downgraded to 1.19.5.3112 and it is working so far.
I’ve attached log files for trying to play a Live TV channel for the old and newest versions.
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