UGOS Pro bug — "Necessary device information missing"
Posting this in case others hit the same issue — confirmed as a real UGOS bug by UGREEN support (R&D acknowledged it, fix pending, no ETA).
Symptoms (often appear together, sometimes just one): Web login fails with "Necessary device information missing" Docker page shows "Failed to operate" even though containers are still running fine System Update check fails with "Failed to check"
**Root cause: ** internal UGOS services (gateway_serv, docker_serv, storage_serv, ctl_serv, app_serv) communicate over local gRPC sockets/certs under /tmp/.cache/. After certain restarts (or just over time on some units), these services lose sync with each other — sockets/certs go missing, and services can't reconnect until the whole stack is restarted together. It's a service-discovery/watchdog issue, not actual data loss or drive failure — containers/data stay intact throughout.
I've reported this already and it should be fixed soonish Just curious if anyone of you experienced this weird behavior as well?
Only temporary fix is rebooting the NAS more frequently.
I attach some images to show the unaccessible WebGUI and the error messages in the Android App.