Start at Power and Link
For a wired UniFi Protect camera, the first questions are whether the camera has power, whether the Ethernet link is stable and whether the NVR/console can reach the camera network.
Check the Physical Path
- Confirm the PoE switch port is supplying power.
- Look for repeated port link up/down events.
- Test the cable and terminations when possible.
- Check outdoor connectors for moisture or corrosion.
- Verify the switch uplink back to the NVR/network is stable.
Then Check Protect
If physical connectivity is good, review the camera status in Protect, console/NVR health and whether the problem affects one camera or multiple cameras. Several cameras failing together usually points toward a shared switch, uplink, power source or recorder.
For new deployments, see UniFi Protect camera installation.