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:
#1
Plex Client Verion: 5.29.1
Plex Platform Version: 4.4.0
LG WebOS: 5.40.0.9
#2
Plex Client Version: 5.29.1
Plex Platform Version: 3.9.0
LG WebOS: 6.00.25
#3
Plex Client Version: 5.29.1
Plex Platform Version: 3.9.0
LG WebOS: 6.00.25
Again, it’s working fine on a Roku Ultra (Version 6.9.12.7411-08dc87cc9-Plex).
Other things I tried that I have not yet mentioned:
- I did a factory reset on both TV #1 and #2 (not #3 because it’s the same model as #2). After each reset, plex still does not work.
- I tried an older docker image. No change.
Seems to be related to this perhaps:
https://forums.plex.tv/t/plex-app-no-longer-working-on-lg-oled65c9pua/762237
