Conflicting Servers

[armAmint]

Server Version#:1.41.3.9341
Player Version#: 1.106.0.276-fe8d1d20

I’m having a problem where most times I login to a given PMS it removes another from view in the acct. I have three running:

Synology ds920+ (movies), Synology ds923+ (tv), minisforum th60 (users; window 11)

If I start from scratch, and turn on the PMS on the ds920+ (og), then the ds923+ (just added), they both show and work fine, reliably. Its when I sign in to the windows PMS that Plex stops recognizing things. The ds920+ will disappear. When I stop that PMS and restart it the ds923+ will disappear. Follow the same step for the ds923+, and the ds920+ will vanish again. At no point, while running, has the winPMS disappeared entirely, but sometimes it’ll start having a hard time connecting. It definitely feels like something on the winPMS (or win11 generally) is blocking something, but I cant figure out what it is. That being said, the two PMS on the NAS kick each other off when they are stopped and restarted as well.

Full scope, I did just change my ISP to At&t fiber. Everything worked fine for years, previously, between the ds920+ and the winPMS. The problem DID show up before I added the ds923+ though, so I’m confident that the problem originates from one of them, and I’m now leaning to the winPMS (or device) since it always remains when running.

It could be something with the modem/router, obviously (I’ve been reading nightmares from people who have migrated to At&t fiber and their bgw320), but I have gone through every setting on it and nothing has happened. I even tried to pass-through to my old router and the problem still persists.

I’ve done everything else imaginable: uninstall/reinstall everything; opened ports; changed settings in the networking configurations of the devices, including disabling all firewalls. I’m just not sure where to go from here. When I look at remote access for each, when available, they each have the same public address and their separate, individual, private address, with both pointing towards port 32400.

If anybody has any suggestion, it would be greatly appreciated. Someone on the reddit forum suggested that the public port must be the same for all, and must be changed so that they are different. I’m not sure where to go to check that, and then obviously change it if it were the case.

Edit: The public port is visible on canyouseeme, just fyi.

[OttoKerner]

Did you copy the Plex data folder with the Preferences.xml file from one server to the other?
If you did, you have also cloned that server’s identity.
As a result, the original and the clone are always replacing each other in clients – kinda randomly.

You need to untangle this mess, by giving either the original or the clone a new identity.
See Moving/Cloning Metadata - #4 by OttoKerner
(if the server is not running on Windows, you need to edit the Preferences.xml file instead of thre Registry.)
https://support.plex.tv/articles/201105343-advanced-hidden-server-settings/

[armAmint]

At one point I did backup the winPMS to the 920+, in a entirely unrelated shared folder, the problems existed before that, however. Thanks for this suggestion though. That was a page I had not been able to locate yet, so I’ll try and troubleshoot from there. I did at one point completely uninstall and reinstall the winPMS from the system though.

If I delete the preferences file from the920+ (which I’m pretty sure I’ve done once), that’s sufficient to reset it’s protocols? I guess I’m going to do it from both ends and see if that’s the ticket. Thanks again!

[FordGuy61]

Regarding remote access, the public port must be different for all three servers. The internal port is always 32400.

You will have three port forwarding statements, one for each Plex server, each with a different public port.

In Settings → Remote Access + Show Advanced, you must check the box for Manually specify public port, and enter the external port number for that server.

Example: Note the different external ports

Server	Internal IP Address	Internal Port	External Port	Protocol
PMS1	192.168.1.10	32400	32400	TCP
PMS2	192.168.1.20	32400	32500	TCP
PMS3	192.168.1.30	32400	32600	TCP

For port forwarding with an AT&T BGW-320, see this post: Changed ISP - No Remote Access with AT&T BGW 320-500 - #3 by FordGuy61. Substitute your servers for the Western Digital NAS.