I had a similar issue with Live View Fail and called service last night. My front door camera and my whole system was functioning properly. suddenly yesterday, the front camera would not supply a live view. It detected movement and took saved vids - but would not supply live view - got failed message. I did all the ususal - restarted, rebooted, reset, batteries in/out, service sent it updated firmware. nothing worked. Oddly, any camera I put there did the same there but functioned everywhere else. The cams have full bars for all connectivity, too. Really strange. Then last night I switched the resolution from “enhanced” to “best” and voila…all fixed from there. I also set them all back to "enhanced and they all work fine now. Just sharing in case that helps someone - reset the quality downwards to “best” or “saver” to see if that helps with live view failed. Why that worked, I have no idea.