On the night of 1/5/2026, my hub Smartthings hub D052A81720AE0001 stopped communicating with Z-wave devices. I noticed the status LED light was no longer green and the hub network lights were not lit. I disconnected the network cable and reinsurted it. The network connection lights began showing connectivity. The hub status LED turned green. Still no Z-wave device control. I disconnected power from the hub and reconnected power. Once LED light turned green I tried connectivity to Z-wave devices to no avail.
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The night of 5-1 it was my case also. Both Zigbee and Zwave devices.On more or less the same time all my devices (except of course the WIFI cams) cannopt be reached anymore.
But no electricity wifi, or internet problem. Just spontaneous.
Samsiung know about the case but do not seem to have an answer . Only “wait till the 95 Update will start being send out, 12-1 and later.”
You have a V2 I suppose? With 58 last update?
Maybe stupid question, but I want to be sure: Anybody using Sharptools?
Of my four hubs. with each ca 40 devices. the one that broke down was heavily used. Especially a Fibaro Z-wave switch, because I use it for my Central Heating. I am not on the location. Only a neighbour who doesn’t understand the tech.
So stress when it its freezing.
Hi @jcnoonan2
Our engineering team asked for some additional information in order to begin the investigation.
- Date and approximate time on when this happened
- Submit the hub logs as soon as you notice the issue.
- In the Advanced Users app, enter the “Hubs” section
- 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.
- If you have more than one Hub, the name of the one involved in the issue.
- Finally, open support access so we can get the corresponding Device’s IDs and see other properties of the hub:
- Confirm the email account registered in the forum is the same one you use for SmartThings. If not, please share it with me over DM
- Enable support access to your account:
- Go to the SmartThings Web (my.smartthings.com)
- Log in to your Samsung Account
- Select Menu (â‹®) and choose Settings
- Toggle on Account Data Access
- 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.
See more information about this access here: https://support.smartthings.com/hc/en-us/articles/36170233944852-Enabling-Account-Data-Access-for-Support
I completed the steps. You should have access to my account. I provided the information in my chat session.
JPcm7$8$9on
Our engineering team asked for some additional information in order to begin the investigation.
- Date and approximate time on when this happened – 1/5/2026 during the night. All was working when I went to bed. When I woke up, Z-wave devices were not working, the network connection lights were not blinking, and the LED was red. I disconnected the hub from the network and plugged it back in. Connection lights began blinking. Could not access Z-wave. I then unplugged and replugged the hub, still not access to Z-wave. I did run “Z-wave repair” to no avail.
- Submit the hub logs as soon as you notice the issue.
- In the Advanced Users app, enter the “Hubs” section
- 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.
- If you have more than one Hub, the name of the one involved in the issue.
- Finally, open support access so we can get the corresponding Device’s IDs and see other properties of the hub:
- Confirm the email account registered in the forum is the same one you use for SmartThings. If not, please share it with me over DM
- Enable support access to your account:
- Go to the SmartThings Web (my.smartthings.com)
- Log in to your Samsung Account
- Select Menu (â‹®) and choose Settings
- Toggle on Account Data Access
- 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.
I have Sharptools but only to run an every 15 minute refresh operation on my Honeywell thermostats. Without that the thermostats only update in SmartThings (V2 hub) every 12 hours.
So, yes, but minimal traffic from Sharptools to SmartThings.
OK, I am new at Sharptools and was wondering if commands from ST to a Z-wave (Fibaro) switch may have caused it being offline now. It was the only device offline showing. But it is at the very end of the Z-wave mesh. It could also be that the Connection path has problems . (Like all zigbee devices have problems with the connection path.)
I am not familiar with “Sharptools” and don’t know what “commands from ST to a Z-wave (Fibaro) switch may have caused it being offline now” means. I haven’t done anything with the hub for quite some time.
Also, in the community site, this problem is happening to others exactly as it is happening to me. It just stopped working one night and only for Z-wave. Everything else works.
I would be happy to talk in person. Have some updates been made, similar to smartphone updates are automatically made?
John Noonan
316-207-4015 … texts welcome.
Sorry. I just wanted to know if it m a y b e was Sharptools … and so he answer is no.. Sharptools is OK.
Difference is that in my case also Zigbee devices are not responsive any more.
The connection path also stays empty.
The top one shows how it should be.
The middle is a Zigbee bulb. Maybe Hue.
Tou can also see where it all ended after january 5th
The top one has data till now.
