DIAGNOSIS The bridge is losing its connection to your router or the Philips cloud. This is almost always a network hardware issue.
FIX
- Unplug the bridge's power and ethernet cable for 30 seconds.
- Plug the ethernet cable directly into a primary LAN port on your router (not a switch, extender, or powerline adapter).
- Then plug in the power. Wait for all three blue lights to be solid.
IF THAT DIDN'T WORK Your router may be assigning a new IP address to the bridge. Log into your router's admin page and set a static/reserved IP for the Hue Bridge's MAC address (found on the bottom of the bridge).
HEADS UP If you have a mesh Wi-Fi system with a dedicated backhaul channel, ensure the node the bridge is plugged into has a strong, stable connection to the primary node.