I have a Smartthings setup at my house that uses a Smartthings V3 Hub (before Aeotec). I have a few door sensors, Buttons, motion detectors, and several water sensors. They are all the original Samsung brand with the addition of a couple Aeotec water sensors. I have a Z-wave water shutoff valve and a GE light switch. There are several Phillips Hue bulbs that are controlled by Smartthings and bridged through a Philips Hue bridge.
When I first set up the configuration several years ago, I had Zigbee devices that would drop offline. I ended up adding a few Samsung Smartthings Outlets around the house to act as Zigbee repeaters. This set up worked flawlessly until a couple of weeks ago.
What is happing is that every few nights the Samsung outlets all drop offline at the same time. Consequently, any ZigBee device that is routed through the outlet also drops offline. All other Zigbee devices, the Z-wave devices, and the Hue bulbs continue to work. If I reboot the Smartthings hub everything comes back online.
I did note that the Driver software for the Smarthings outlet was updated around Oct 27th, 2025, but I have not been able to find any other complaints about this problem. Last night I disconnected all the Smartthings outlets to see if my network will work without repeaters.
There seems to be a variety of reported Zigbee issues at the moment.
The one I’ve been suffering from for weeks is that every now and again I seem to lose my entire mesh. I suspect that actually my directly connected devices are fine, it is just my routers and everything routing through them that lose connectivity with the hub. The devices don’t seem to actually get reported offline unless I reboot the hub or wait a long time (neither of which I tend to do). For me the instant cure is to power cycle one of the routers, though it can’t always be just any one. It is somewhat frustrating to say the least.
Every time I see a new Zigbee issue reported the symptoms aren’t quite the same as I see. Yours sounded promising until you said rebooting the hub helped.
Hi, @jdh3rd
I can open a report for the engineering team to check why the devices are being marked offline.
For this, you need to do and provide the following:
Re-connect them to SmartThings
After you do, submit the hub logs for the engineering team to check any events of this process that could be helpful
Enter the corresponding Hub and click on “Dump Hub logs”
Confirm the process by clicking on “Dump Hub logs” again in the pop-up.
You’ll get a green box at the top confirming the Hub logs were requested.
Then, when the device becomes offline, take note of the date and time. If they go offline while you’re sleeping, provide a time range when it could’ve happened, including your timezone. For example: November 4th at 16:20 CST or from 22:00 to 5:00 am the next day
And also, send the hub logs as soon as possible (same steps as above).
I followed the instructions, did a hub dump and opened my account for access. I will do another dump when devices go offline. BTW, I left the outlets unplugged and ran my network without them. I ran great for a week. Now other devices are going offline and will not come back until the hub is rebooted. It will probably take a few days for devices to go offline again and I will do another dump. Please open a ticket for me.
My hardware configuration has remained unchanged for a couple years before this all started with rare outages that self corrected. Now my system unreliable. I have a couple Z-wave devices or I would look into just getting the new Aeotec Hub.
I followed the instructions, did a hub dump, and opened my account for access. I will do another dump when devices go offline. BTW, I left the outlets unplugged and ran my network without them. It ran great for a week. Now other Zigbe devices are going offline and will not come back until the hub is rebooted. It will probably take a few days for devices to go offline again, and I will do another dump. Please open a ticket for me.
My hardware configuration has remained unchanged for a couple years before this all started with rare outages that self-corrected. Now my system is unreliable. I have a couple Z-wave devices or I would look into just getting the new Aeotec Hub.
Jack
I created a Hub dump after loosing my Zigbee devices again. It now happens every couple days. I am not sure where the dumps go, but I followed the instructions. Unfortunately my Smartthings setup becoming useless after a few years of being flawless.
The Zigbee devices stopped responding around 10:00 PM Eastern Daylight savings time. The offline Notifications reported from 11:05 PM and continued to about 11:30 PM and never reconnected.
Sorry. The date is 11/20. Zigbee buttons did not work at 10:00 PM eastern daylight time. Notifications for unresponsive Zigbee devices start around 11:00 PM and lasted for 30 min.
Any news? Now my Zigbee devices will drop and will not reconnect. Ironically, I have an original Samsung manufactured V3 hub and Samsung manufactured Zigbee devices and they are the ones that will not connect. Z-wave devices and Philips Hue Hub and bulbs all work just fine. I am close to punting and trying something like Hubitat.
My network worked flawlessly for years with a few exceptions like when the edge drivers were introduced. No it is just a mess.
Sorry for the delay.
The engineering team asked me to confirm if, once you removed the outlets that acted as repeaters from the network, you made any modifications to the physical layout to avoid the devices going offline since this behavior was observed and caused the addition of such repeaters.
Also, to verify, once you removed the outlets and the network was stable for a week, when the issue happened again, did all the devices go offline at the same time?
I set up Smartthings originally in 2018. My hub and all my Zigbee devices are Samsung manufactured devices. Since setup I have added two Aeotec Smartthings manufactured water sensors.
When I first set it up, Zigbee devices would occasionally drop, so I added five Samsung Smartthings outlets to act as repeaters. This configuration worked well for years except for some periods when Samsung was making major changes to its software such as the Edge drivers.
In the past year, some of my Smartthings devices would become unresponsive until I rebooted the Smartthings hub. Then all five of my outlets would drop offline as well as any downstream Zigbee devices. Eventually I just unplugged the outlets to see if the mesh would work, and it did for a while. A couple weeks ago all off my Zigbee devices dropped offline and would not come back even after the reboot.
After two weeks of being offline and out of frustration, I bought a Hubitat hub and everything is working great. My main reason for getting a Smart home system was for a Z-wave master water valve. Smartthings’ decision to drop support for Z-Wave also played into my decision since the water valve would be very expensive to replace. If the problem turned out to be my Smarthings hub hardware I would need to rebuild everything anyway. The Smartthings hub that supports Z-wave is being retired, thus the change to Hubitat.
I have no intention of going back to a Smartthings hub, but I will help the engineering team if it is useful.
Did “you made any modifications to the physical layout to avoid the devices going offline” - No
“once you removed the outlets and the network was stable for a week, when the issue happened again, did all the devices go offline at the same time?” - Yes
ok, thank you for the feedback.
For the engineering team to investigate the issue, they need more logs of the offline events with and without the repeaters.
So, to avoid you having to reconnect the devices, we’ll keep monitoring this thread in case there’s someone with a similar issue to keep investigating.