I’m experiencing a large-scale device dropout that started on April 29th at around 18:08 UTC and have not been able to recover since.
Setup:
5 SmartThings Stations in a Hub Group (4 Stations + 1 primary)
Hub firmware: 000.060.00013
Mix of Matter (39 devices) and Zigbee (22 devices) affected
Also 3 OCF and 1 LAN device offline
What happened:
On April 29th at exactly 18:08 UTC, 62 out of 65 devices dropped offline simultaneously — both Matter and Zigbee at the same timestamp, which strongly suggests a hub-side event rather than a device or RF issue
A smaller second wave dropped on May 2nd at 12:33 UTC
What I’ve already tried:
Full hub reboot (multiple times) — no effect
Power cycling all mains-powered devices — no effect
Changing the primary hub within the Hub Group — no effect
Verified Zigbee channel (24) — no interference issue
Key observations:
All offline devices show as connected to the primary hub (expected in a Hub Group)
The simultaneous dropout of both Matter and Zigbee at the exact same second points to a firmware or cloud event
Devices that stayed online are all Virtual switches, MQTT, Mobile, and Hub types — only radio-connected devices dropped
Ask:
Has anyone with firmware 0.60.13 on a SmartThings Station seen the same pattern?
Is there any recovery path short of deleting and re-pairing 60+ devices?
Can SmartThings staff check hub logs for my hub around April 29th 18:08 UTC?
When you say ‘offline’, is that just as reported by the mobile app, or have local automations stopped working as well? Are the hub LEDs still showing you connected to the backend or are they showing you disconnected?
The hubs are connected, the automations that rely on the “offline” devices don’t work. I tried re-pairing one device and it worked, it showed up as a new device. Doing this 64x more times is the problem, and some of them are not easily accessible (relays inside ceiling fancoils)
I’m on 16.12 and having same problems, it’s really bad at the minute, it’s been about the third time in the last week, before that it was all vey stable, sometimes using webapp seems to help more than the app to get them to pick back up, gone from 3 offline to 15 now, all zigbee
same kind of issue looks like hub side problem not devices, because all dropped same time (matter + zigbee both) so not normal.
i think before re-pair 60+ devices try few things:
maybe power off hub for like 15-20 min (not simple reboot) then start again
also try without hub group (single hub) just for testing if group causing issue
firmware 0.60.13 maybe bug or cloud side event at that time
better if support team can check logs from april 29 18:08 UTC, because too exact timing
Select the time period and confirm - In this step, please select “Until turned off”, once the team finishes, we’ll let you know so you can disable it again.
The engineering team shared the following information after completing their analysis:
Some Zigbee devices may be able to rejoin the network by using the “Scan Nearby” option in the app. If that doesn’t work, the devices will need to be manually factory reset and then rejoined to the hub.
Regarding the issue, it was caused by a rare race condition where both hubs were acting as the primary hub at the same time. As a result, the hub that should have remained secondary made unintended changes to the Zigbee and Matter networks, which caused the devices to stop functioning properly.
This is a rare scenario, and a mitigation is already planned for an upcoming release.
Hi, @nuno7
Can you clarify what you mean by this statement, please?
Due to the issue, the devices must be rejoined, but in the case of Zigbee devices, there’s no need to delete the device from the SmartThings platform first which allows you to keep the automations and other configurations.
Some Zigbee devices may be able to rejoin the network by using the “Scan Nearby”
If not, they need a factory reset and then perform the Scan Nearby
This should make the device get connected with the existing record of the device in the platform.
In the case of Matter devices, this approach doesn’t work, so you need to delete them and reconnect them.