Home Assistant connection lost from time to time

[Titou84240]

The problem

Hi All,

I'm sorry if already adressed , but can't seems to find anything around that.

I have from time to time , my web browser saying to me "lost connexion to home asisstant" and reconnecting alone by actualising the web page.

When i go to the logs i have this :

"Enregistreur: homeassistant.components.websocket_api.http.connection
Source: components/websocket_api/http.py:533
intégration: Home Assistant WebSocket API (documentation, problèmes)
S'est produit pour la première fois: 14:22:54 (2 occurrences)
Dernier enregistrement: 14:23:41

[140367866538032] from fe80::5c66:970f:5668:ad1a (Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/134.0.0.0 Safari/537.36): Disconnected: Received close message during auth phase
[140367611542208] Christophe from 127.0.0.1 (Home Assistant/2025.2 (io.robbie.HomeAssistant; build:2025.1178; iOS 18.4.0)): Disconnected: Received error message during command phase: No PONG received after 27.5 seconds"

What version of Home Assistant Core has the issue?

core-2025.3.4

What was the last working version of Home Assistant Core?

core-2025.3.4

What type of installation are you running?

Home Assistant OS

Integration causing the issue

Don't think it an integration but i might be wrong

Link to integration documentation on our website

No response

Diagnostics information

No response

Example YAML snippet

Anything in the logs that might be useful for us?

Enregistreur: homeassistant.components.websocket_api.http.connection
Source: components/websocket_api/http.py:533
intégration: Home Assistant WebSocket API (documentation, problèmes)
S'est produit pour la première fois: 14:22:54 (2 occurrences)
Dernier enregistrement: 14:23:41

[140367866538032] from fe80::5c66:970f:5668:ad1a (Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/134.0.0.0 Safari/537.36): Disconnected: Received close message during auth phase
[140367611542208] Christophe from 127.0.0.1 (Home Assistant/2025.2 (io.robbie.HomeAssistant; build:2025.1178; iOS 18.4.0)): Disconnected: Received error message during command phase: No PONG received after 27.5 seconds

Additional information

No response

[cason-miles]

I am having the same issue on 2025.4.1. I recently updated from a 2024 HA version. Ever since I have had the same problem. I use a URC control system that I implemented with Home Assistant, I though it was the URC controller causing this issue, but maybe not. Either way these errors are causing the URC controller's CPU to hit 100% usage before it loses the connection and restarts the connection process over again. These issues were not there before I updated.

Logger: homeassistant.components.websocket_api.http.connection
Source: components/websocket_api/http.py:533
integration: Home Assistant WebSocket API (documentation, issues)
First occurred: April 5, 2025 at 11:24:59 PM (15 occurrences)
Last logged: 12:24:18 AM

[139657611811936] URC from 192.168.1.193 (Mozilla/5.0 (Unix; U; Linux 2.6.39) http/2.8.5 Tcl/8.6.0): Disconnected: Received error message during command phase: No PONG received after 27.5 seconds
[139657651423264] URC from 192.168.1.193 (Mozilla/5.0 (Unix; U; Linux 2.6.39) http/2.8.5 Tcl/8.6.0): Disconnected: Received error message during command phase: No PONG received after 27.5 seconds
[139657650883600] URC from 192.168.1.193 (Mozilla/5.0 (Unix; U; Linux 2.6.39) http/2.8.5 Tcl/8.6.0): Disconnected: Received error message during command phase: No PONG received after 27.5 seconds
[139657563087936] URC from 192.168.1.193 (Mozilla/5.0 (Unix; U; Linux 2.6.39) http/2.8.5 Tcl/8.6.0): Disconnected: Received error message during command phase: No PONG received after 27.5 seconds
[139657639167168] URC from 192.168.1.193 (Mozilla/5.0 (Unix; U; Linux 2.6.39) http/2.8.5 Tcl/8.6.0): Disconnected: Received error message during command phase: No PONG received after 27.5 seconds

Logger: aiohttp.websocket
Source: components/websocket_api/http.py:310
First occurred: April 5, 2025 at 11:23:31 PM (16 occurrences)
Last logged: 12:26:33 AM

192.168.1.193: Client protocols [''] don’t overlap server-known ones ()