My Plex Media Server is running normally in Docker on a UGREEN NAS. Local access works, but the server never appears on the Plex home screen and the claim process never triggers. The server is unclaimed, but Plex’s cloud backend is not recognizing it.
Inside the container, the claim endpoint (curl -v https://plex.tv/api/claim) returns 404 Not Found:
This prevents the server from registering with Plex cloud.
Identity information from Preferences.xml:
MachineIdentifier=“c16a8324-ee17-4f15-adc5-da315a51429d”
ProcessedMachineIdentifier=“a4f2ab2aab8afdc679082a756ad104690c340cf2”
AnonymousMachineIdentifier=“fb90aec8-cc61-4ba9-9506-f55c0ae87038”
PlexOnlineToken=“”
FriendlyName=“bindernas”
Preferences.xml is valid and writable. Server is unclaimed.
**Cloud API (https://plex.tv/api/servers) returns “Please sign in” even when authenticated.
**
This appears to be a backend routing failure or a stale server identity associated with my account or IP. Please clear any ghost/stale entries for this MachineIdentifier and restore claim endpoint routing.
I can provide full logs if needed.
Thank you.
Plex Web Version:
4.156.0
