Suddenly Synology DSS 7.2 Plex Server Local Server Can not connect

Plex Media Server
1

Server Version#:1.43.0.10492-720010492
Player Version#:any
On Synology NAS DSM 7.3.2

I can loginto the the server from the web player and desktop app but it only loads the default plex.tv stuff none of my media is available. When the issue started I updated the player to the current version with no change. All media still exists and the PlexMediaServer account still has access to it. When opening the web player I get an error

The server "Plex_local" is unreachable. Make sure it's running, double check your network, and try again.

It try’s to connect when you first load the web page then that whole area of settings disappears any help would be greatly appreciated. Screen shot below is what my settings ends up looking like. I have also tried signing out and back into the plex server and plex website still stuck.

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2

Restart the NAS.

If that does not work, then manually retrieve and post a set of server log files.

  1. Stop Plex Media Server
  2. Using Synology File Station, navigate to the Plex Data Folder.
  3. Right click on the Logs directory and choose Compress to Logs.zip.
  4. Download the zip file and post it to the thread.
3

NAS reboot did not resolve the issue, logs are attached

Logs (1).zip (5.2 MB)

4

Thanks for the log files.

Debug level logging has been disabled. When server access is restored, go to Settings → server_name → General + Show Advanced. Re-enable debug level logging. Do not enable verbose logging.

Mar 23, 2026 18:57:31.291 [140333848992568] WARN - [HttpClient/HCl#2] HTTP error requesting GET https://plex.tv/api/v2/server/access_tokens?auth_token=xxxxxxxxxxxxxxxxxxxx (6, Couldn't resolve host name) (Could not resolve host: plex.tv)
Mar 23, 2026 18:57:34.287 [140333848992568] WARN - [HttpClient/HCl#3] HTTP error requesting GET https://plex.tv/media/providers (6, Couldn't resolve host name) (Could not resolve host: plex.tv)
Mar 23, 2026 18:57:34.287 [140333783706424] ERROR - [MediaProviderManager/Response::fetch] failed to complete query (-6)

Plex Media Server is unable to contact hosts at plex.tv. This will cause problems with clients accessing the server locally and remotely, the server’s ability to download codecs, etc.

  1. Reboot your router and any switches, etc. between the NAS and the router.

  2. When the network is back online, verify the NAS network settings: IP address, subnet mask, and gateway.

  3. Configure the NAS to use public DNS servers such as 1.1.1.1 (Cloudflare), 9.9.9.9 (Quad9), or 8.8.8.8 (Google).

  4. In Synology Control Panel → Regional Options → Time tab → Time Setting, synchronize the NAS with a public NTP server. This ensures the NAS’ time is correct. It is also a quick Internet connectivity test.

  5. Stop Plex Media Server, wait 15-20 seconds.

  6. Start Plex Media Server. Wait three minutes for it to fully start.

  7. Point a browser at the IP address of the NAS and see if you can login to Plex. For example, if the NAS IP address is 10.1.2.3, use http://10.1.2.3:32400/web.

5

Thank for all your help FordGuy61 the router reboot seems to have resolved the issue.

What was really weird is one PC in the house with the plex app still worked normally, but all the others were not. Thanks again for getting it back up.