I have a V2 hub with around 60 devices connected - Leviton, Zooz and Honeywell switches, Samsung sensors, a smart lock, garage door opener, and a few other random sensors.
About ten days ago, roughyl half of them went “offline”. No rhyme or reason - no commonality among manufacturer, device type, wireless type, et cetera. As an example, I have two identical switches in one box - one went “offline”, one did not. Both work fine at the switch, but one doesn’t work at all from the app or IDE. Both Zwave and Zigbee devices are offline. I also have both Zwave and Zigbee devices online. Distance doesn’t seem to be a problem, because I have devices on the other side of the house that are online but ones line-of-sight to the hub are offline. Some of the devices have been in place for a year with no issues.
I’ve power-cycled the hub through the IDE, multiple times. I’ve power-cycled it by removing power, multiple times. I’ve run network repair, multiple times, both in conjunction with a power-cycle and without. I’ve also tried re-adding the “offline” devices with no luck.
Any thoughts? My next step is a full factory reset, which seems daunting.