All but one Z-wave devices with status HUB_OFFLINE, Unavailable in App, breaks Alexa, otherwise perfectly functional

[kkennedy22 (Kevin)]

I did get it working again after switching the Orbi settings off. I followed @JDRoberts instructions in the below post for “Healing the Zigbee Network”. 6 hours after following his instructions, everything still showed “Unavailable”, but when I got home from work today everything was good (~18 hours). Previous to finding JD’s solution, I also had luck with 2 of my 10 unavailable devices doing what Jay did, changing the device type. But strangely that worked for one of my Iris motion sensors, but not the other 5 identical ones. Hope you get everything back in order as well.

Several ZigBee Devices stopped responding (Troubleshoot question)

You’re correct that there is a known problem with GE bulbs where they may lose connection with the network, but not usually a bunch of them at once. Still, it can happen that the one that goes bad is at a critical point where it is acting as a repeater for the others so sometimes you might see four of them all get lost once even though it’s really only one that is demonstrating the symptoms. This problem is the reason why the GE bulbs Are not on the official “works with SmartThings” list. On the other hand, that shouldn’t have affected the motion sensors, and several people have reported having weird issues with Zigbee devices. Actually this has been going on since March. So, I’m going to give you two suggestions. One of these is just the standard thing you do with any zigbee network th…