Solution Kasa devices reboot randomly
Updated 5/13 : added beta for HS100 (EU)V4
This Article Applies to:
HS103, HS210, HS220, HS200, KP303, KP400,KP105,KL110,KL130,HS300
Some customers may find that some of their Kasa devices would randomly auto-reboot (randomly goes off and quickly back on in a sec). This article aims to guide you to get this resolved.
Issue Description/Phenomenon
How to determine whether a Kasa device is encountering an auto-reboot, check the below phenomenon:
1) Kasa Device’s LED lights status. When a Kasa plug auto-reboot, the LED light will turn off and then turn on quickly. For a Kasa switch, the Wi-Fi indicator will light up quickly, change to be flashing green, then solid green, then turn off finally. For a Kasa bulb, it will flicker quickly.
2) Electrical appliances connected to Kasa devices. For example, when a Kasa plug auto reboots, the equipment connected to the plug will suddenly lose power and resume immediately. When a Kasa switch auto reboots, the bulb/lamp connected to the switch will suddenly dim or flicker.
Available Solutions
The developer has provided some beta firmware for certain Kasa models to resolve the auto-reboot, upgrade the firmware of the problematic Kasa devices to this version, monitor a few more days, and check if the auto-reboot is gone
Below models got fixed on the official firmware:
HS300(US)_V1/V1.8 ： Fixed on firmware 1.0.20 and later firmware
HS100_V4(US/UK) : Fixed on firmware 1.1.4 and later firmware
HS220(US)_V2: Fixed on firmware 1.0.8 and later firmware. ( HS220 US V2 Beta https://static.tp-link.com/beta/2021/202104/20210407/Upgrade_Instruction_HS220_V2_fix_auto_reboot_issue 0407.zip )
( If HS220 can't be factory reset in a reboot, try turning off the Wi-Fi router that the switch was connected to. Shared in post HS220 Rebooting solved by @dhigby )
KL110/KL130_V2 : Fixed on firmware 1.0.11 and later firmware.
KP105 (UK/UK)_1.0 : Fixed on firmware 1.0.5 (EU) and later firmware; Fixed on firmware 1.10.7(UK) and later firmware
HS103(US)_V3: Fixed on firmware 1.0.4 and later firmware.
HS210(US)_V2: Fixed on firmware 1.1.5 and later firmware.
HS220(US)_V2: Fixed on firmware 1.0.8 and later firmware.
HS200(US)_V4: Fixed on firmware 1.1.5 and later firmware.
KP303(US)_V1/KP303(UK)_V1/KP303(AU)_V1: Fixed on firmware 1.0.11(US), 1.0.5(UK), 1.0.4(AU) and later firmware.
KP400(US)_V2: Fixed on firmware 1.0.7 and later firmware.
Note:
1) There is a Word document in the folder providing detailed instructions to upgrade the Kasa firmware.
2) Please save the downloaded file to the desktop, unzip and open it on the desktop.
3) Please use a Windows computer whenever possible.
Troubleshooting Tips
Step 1
Check and ensure both the Kasa device's firmware and the Kasa app version are up-to-date. If not, update first.
Step 2
Factory reset the Kasa device by pressing the Reset button for 10 secs, keep it in the factory default state and observe whether it will reboot or not.
Step 3
Create a new isolated network on your home network and only let Kasa devices connect to this network.
* About isolated network:
1. If your router supports "Guest Network", please turn on "Guest Network" and you can take it as an isolated network.
2. If your network devices support setting “multi SSID” or “VLAN”, please create a new multi SSID/VLAN, and only let the Kasa devices connect to it. It will isolate Kasa devices too.
3. If you have an old router, please connect the old router behind the main router. Assign the new router a different set of IP addresses (like 10.0.10.1) and then assign some smart plugs and switches to the new router.
Note: Do not connect your phone or other Wi-Fi devices to that Guest Wi-Fi/ isolated network that the Kasa devices are connected to, check first if the auto-reboot problem stops or not. As certain device may cause the Kasa device to reboot.
If the issue is gone after you created an isolated network, you could then connect mobile phone and other Wi-Fi devices gradually to see if any device will trigger this reboot issue.
Step 4
If you’re using a Mesh network, try to disable the "fast roaming" and "beam forming" on the mesh devices.
Step5. If you use other third party APP to control smart home devices, temporary unlink them and see if that stops the reboot behavior
Shared by @MarqueIV on #17 of this thread for Alexa users, check if Alexa> Hunches > Set up automatic actions settings, temporarily turn that off
If the troubleshooting tips and the beta firmware still don’t resolve the auto-reboot issue, report back by submitting a diagnostic via email with the subject ‘TP-Link Community- [Forum ID 262328] Kasa devices reboot randomly’, or leave a reply on this thread. In either case, be sure to provide the following information:
- Model of router, and network topology/layout:
e.g. Router model archer C7 <wireless>HS110 V2
- Do you use any third party app or software to control HS100 like Home Bridge, Home Assistant etc.
- What are the other devices that in your home network, like TV model -, Win10 Laptop etc.
- The frequency of the auto-reboot:
- Do you have other Kasa devices that can work properly without an auto-reboot in the same local network?
- Mac address of the kasa device( please share Mac address by private message)
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@Solla-topee I factory reset the KP105, plugged a light in and manually switched it on. It stayed on for 7 mins then cycled, did it again after another 6 minutes, then again a minute later and after that every 24 seconds (+/- 1 second). The outer case temperature using an infrared sensor was 35 centrigrade (so just warm to touch). The KP105 led was toggling between orange and green all the time other than power cycles.
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I decided to buy another KP105 and that one works as expected, both 'out of the box' factory default and once configured in Kasa on the same wifi network as the first one. The only thing I haven't done yet is make the IP address static (a task for later this week). I've just had the new one running for just under an hour with the same lamp load and its not power cycled at all and the surface temperature of the KP105 maxed at a much cooler 26C (in a heated room). The replacement is now also on the 1.07 firmware, I couldn't see the original version as the app never gave any option other than to upgrade. The original is definitely faulty and probably has some internal thermal protection kicking in (which would explain the shorter cycle periods once warm). I contact the seller re a return/refund/replacement.
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Hello @SuffolkD
If the plug keeps doing power-cycle in factory default state, that should be a faulty plug. Wish everything goes well in the process of replacing if that unit has the warranty.
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Is there any solution after several month?
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I thought I was losing my mind until I found this (and other similar) threads on-line.
I have two "Kasa Outdoor Smart Dimmer Plug" outlets used to control two different lights.
Both have the same device info:
Model: KP405
Hardware Version: 1.0
Firmware Version: 1.0.4
One started turning off and then usualy quickly coming back on again. I thought it was the light I was using it with at first, but then the other plug began doing the exact same thing.
A month or so ago both stopped doing this and were stable, until recently, just one of the plugs has begun doing this again, multiple times an hour. I have a ton of Kasa smart plugs and these two are the only two that noticable exhibit this behavior.
No firmware updates show as available for either plug... both are ~6mo old or so at this point.
What do I do?
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Hello @daubstep
May I know do you use any other app/ software to manage smart plug except for kasa APP? If yes, please uninstall app completely and test for a few days.
At the same time, we 'd like to follow up your case through support email to investigate further, please check your email inbox for TKID220417943.
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Hello @daubstep feel free to let us know for any further observation on support email TKID220417943, thanks!
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@Solla-topee I just replaced my EP40 with a KP405 (wanted a dimmer). The EP40 worked flawlessly, but the KP405 will randomly reboot and it's been doing this since the 1st day. It's brand new (less than 2 weeks). The hardware is v1 and the firmware is v1.0.4. Should I return it or fiddle with installing this beta firmware?
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Hello @rickrickles
As for now, KP405 does not have a beta or known related problem with it. You could try a factory reset on the KP405 and see if the plug has the same behavior in the factory default state. If KP405 works fine in default state, that means the piece of hardware is fine, it might be affected by some other settings or local network device.
Then you could try to connect to a Guest network of router to isolate the possible effects from other local networks and see if that helps. Kindly try some tips lists in the first page of this thread as well.
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Hello!
I purchased an HS220 dimmer switch approximately a month ago and it had been working fine up until this morning when it started randomly turning off and on. Some searching turned up this thread however my switch is a V3 switch on firmware 1.0.7 and it does not appear that there are any other firmware updates for it.
I've tried factory resetting it so far and it continues to turn itself off and on randomly. Also I am using HomeBridge to control our lights via. Apple HomeKit and I disabled HomeBridge to see if that made a difference and it does not. If it helps the lights on the switch itself (the white circle that comes on when the switch is off and the LEDs that show the current brightness) do not turn on or off when the random off and on behaviour occurs.
Hopefully you might be able to help me figure this out 
Thank you!
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