Kasa ES20Ms Hangs every few days and requires a reset

Kasa ES20Ms Hangs every few days and requires a reset

29 Reply
Re:Kasa ES20Ms Hangs every few days and requires a reset
2025-12-31 02:27:02

  @epiphanyplx , still an issue with firmware 1.1.6 and using latest HA.  

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#23
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Re:Kasa ES20Ms Hangs every few days and requires a reset
2026-01-01 17:50:37
I noticed that normally ES20M queries NTP server once per hour. Then at some point it queries twice per hour. Then at some point it hangs. While it hangs it queries NTP four times per hour for some hours and then eight times per hour for some hours before I force restart. It feels like there’s some “fork bomb”-like bug in firmware that doubles workload and exhausts resources gradually. My ES20Ms do not use Home Assistant.
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#24
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Re:Kasa ES20Ms Hangs every few days and requires a reset
2026-01-02 02:47:53

  @optmode That makes sense, seems in-line with the behavior I see where it takes some time to go non-responsive.

 

I disconnected one of my two from Home Assistant and the issue persisted so I guess it's not related. I didn't have the issue until I added a second ES20M to my house. Does anyone have the issue with just a single ES20M?

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#25
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Re:Kasa ES20Ms Hangs every few days and requires a reset
2026-01-06 08:52:47

  @optmode @epiphanyplx 

 

Is your switch's firmware updated? The latest version for ES20M V1.0 is 1.1.6 Build 250522 Rel.210254.

 

If the issue persists with the latest firmware (and without using Home Assistant or other open‑source platforms), please reach out to the support team for further investigation. Contact Technical Support

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#26
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Re:Kasa ES20Ms Hangs every few days and requires a reset
2026-01-06 12:44:18

  @Wayne-TP Yes, firmware is fully updated.

Support said that one of my units was too old for RMA and offered no other resolution.

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#27
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Re:Kasa ES20Ms Hangs every few days and requires a reset
2026-01-14 12:49:45

Saw this post on reddit the other day:
https://www.reddit.com/r/homeassistant/comments/1qan7ki/comment/nzb7abd/?context=1

I have disabled polling in home assistant for my 2x ES20Ms, will see if it resolves.

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#28
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Re:Kasa ES20Ms Hangs every few days and requires a reset
Tuesday

  @epiphanyplx did disabling polling work for you?

 

epiphanyplx wrote

Saw this post on reddit the other day:
https://www.reddit.com/r/homeassistant/comments/1qan7ki/comment/nzb7abd/?context=1

I have disabled polling in home assistant for my 2x ES20Ms, will see if it resolves.

 

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#29
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Re:Kasa ES20Ms Hangs every few days and requires a reset
Tuesday

  @rg60614 yes it fixed the problem, still it is a memory leak issue that TP-Link should fix but till then this is a good work around

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#30
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Re:Kasa ES20Ms Hangs every few days and requires a reset
12 hours ago

  @rg60614 yep! Finally able to put the light switch cover back on...

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#31
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