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Evohome failing with: Unable to connect to vendors server #167354

Description

@smarthomefamilyverrips

The problem

Since I did update to HA 2026.3.4 I get often the below error message

Unable to contact the vendor's server. 
Check your network and review the vendor's status page, https://status.resideo.com.

When I check the resido status page there are no outage reports, my evohome system is connected to internet, and I also can access my evohome system through the honeywell app. So it seems very unlikely that there is a problem with accessing the vendor's server

What version of Home Assistant Core has the issue?

2026.3.4

What was the last working version of Home Assistant Core?

N/A

What type of installation are you running?

Home Assistant OS

Integration causing the issue

Evohome

Link to integration documentation on our website

https://www.home-assistant.io/integrations/evohome/

Diagnostics information

Logger: evohomeasync2.auth
Source: components/evohome/storage.py:59
First occurred: 10:35:58 (5 occurrences)
Last logged: 11:12:02

Unable to contact the vendor's server. Check your network and review the vendor's status page, https://status.resideo.com.

Example YAML snippet

N/A

Anything in the logs that might be useful for us?

N/A

Additional information

N/A

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