A few weeks ago plex stopped working on my (3) LG OLED TVs. It’s still working fine on my roku ultra, so I didn’t investigate until now.
It simply gives a screen that says, “<Server Name> is Currently Unavailable.” The screen then tells me to verify the server is online and it has a network connection.
Initially I thought it may be related to the Let’s Encrypt DST Root CA X3 Expiration (September 2021), but the last play using WebOS was 11/23/21 (according to the activity history on the Plex Media Server). So I don’t think that’s related since I have play history past the cert expiration.
Since the error message tells me to validate the network (and I just happen to do computer networking by trade), I did a tcpdump on the plex server and validated the client and server are able to do a TCP 3-way handshake. The client then immediately RSTs the TCP session. I conclude that the network is transporting packets and something on the client side is not happy.
A bit more about my setup:
Plex is running in docker using this image. The network namespace of the container is given a public IPv6 and IPv4 address, so it’s always a “remote” server as far as Plex terminology goes. No port forwarding. Just a simple public IPv4 address.
Here are some details of the three LG OLED TVs that it’s not working on:
On the TV app*, ensure that Settings -> Advanced -> Allow Insecure Connections is set to Always, and on the server, ensure that Settings -> Network -> Secure connections is set to Preferred.
TV is as i said a 42 LA740V-ZB .
Its a 3D smart TV only 4 and a half years old the server i am using is my old pcrunning windows 10 or if you mean plex its version 4.66.1 as i said was working up until the 12/12/21 then i got the could not find server tried to set to insecure connections nothing sign in button dose nothing my 55in LG 4K UHD in the livingroom is fine so is the old firestick in the daughters bedroom .
