Cannot connect remotely to Plex Server

Plex Media Server
1

Server Version#: 1.43.0.10492 macOS
Player Version#: Browser

Server has been working fine until about 24 hours ago when suddenly with no intervention or changes from me, I stopped being able to get access to content

Screenshot 2026-03-21 at 20.46.08
Screenshot 2026-03-21 at 20.46.081213×1224 17.7 KB

Trying to connect to settings shows the below

Screenshot 2026-03-21 at 20.47.09
Screenshot 2026-03-21 at 20.47.091219×1213 39.9 KB

Connecting via Localhost on the computer that PMS is installed on works fine.

Plex Media Server Logs_2026-03-21_20-43-44.zip (2.7 MB)

Can anyone either highlight the problem or provide a troubleshooting guide to follow.

I’ve never forwarded a port on my router and have not changed any settings so I’m a bit stumped.

2

As follow up, I’m trying to use Claude to understand what’s wrong and in Safari’s Dev tools console I’m getting:

[Warning] [Connections] Geoff’s Mac mini is unavailable at https://2a02-8012-11bd-0000-004f-013b-83f5-b3ae.c3ac2e2c4b8c4b98a6e94ae6d0fd9fe2.plex.direct:32400/media/providers (Status 0) (9054-9054-983eec1ac3d26e353d6b-plex-4.159.0-d0cea4c.js, line 2)
[Error] Failed to load resource: A server with the specified hostname could not be found. (providers, line 0)