Everything had been working okay until we extended the number of downlight lights by 4. Now, randomly, every Philips hue light will switch itself off at once.
We use a mixture of 39 devices including the 4 new downlights and one bridge. The devices do include motion sensors. However, I feel confident that they are configured and working correctly. The only new thing on the network is the 4 new downlights. I changed no configuration beyond adding them into a group.
For want of trying something, I have given the bridge a fixed IP addressed. That has not helped.
Any troubleshooting suggestions welcome.