Can't claim Plex server on QNAP - 'Not authorized' despite valid token

I’m unable to claim my Plex Media Server on QNAP TS-451+ (QTS 5.2.7.3297).

ISSUE:

  • Plex v1.42.2.10156-f737b826c installed and running
  • Getting “Not authorized” error when accessing web interface
  • Server doesn’t appear in my account at app.plex.tv

WHAT I’VE TRIED:

  • Multiple complete uninstalls/reinstalls
  • Claim codes (multiple fresh attempts)
  • Manual configuration of Preferences.xml with auth token and MachineIdentifier
  • Verified my auth token is valid via API test
  • Opened all firewall restrictions
  • SSH tunnel access

VERIFIED:

  • Network connectivity to plex.tv works
  • Token is valid (tested against Plex API successfully)
  • Plex processes are running
  • Preferences.xml contains: PlexOnlineToken, MachineIdentifier, ProcessedMachineIdentifier, PublishServerOnPlexOnlineKey

The server simply won’t register to my account despite having a valid auth token in the config. Anyone seen this issue on QNAP before?

Server details:

  • Name: LLTCNAS451
  • MachineIdentifier: 43fe06f59eef4138b5a4da2f4bc89a08
  • Platform: QNAP TS-451+, QTS 5.2.7.3297

Try the User Credential Reset utility.

To add to FordGuy,

If you have everything in Preferences.xml already,

Confirm the network settings are correct (DNS and Gateway IP)