Wemo switches unavailable in HASS but still controllable by mobile Wemo app

The problem

Some Wemo switches in Home Assistant gray out in the dashboard showing they are unavailable, yet they remain available and controllable from the Wemo iOS/Android app.

Restarting the Wemo switch resolves the problem, but it eventually happens again.

The network is reporting no errors with good connectivity to the switches.

The issue seems most common with the Wemo Light Switch 2nd Gen or V2 (WLS040) and Wemo Smart Light Switch 3-Way (WLS0403), and doesn’t seem to be common with the Wemo Smart Dimmer Switch (WDS060).

What version of Home Assistant Core has the issue?

2021.11.5

What was the last working version of Home Assistant Core?

No response

What type of installation are you running?

Home Assistant OS

Integration causing the issue

Wemo

Link to integration documentation on our website

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

Example YAML snippet

No response

Anything in the logs that might be useful for us?

2021-12-12 17:14:18 ERROR (Wemo Events Thread) [pywemo.ouimeaux_device] Unable to reconnect with Bathroom Fan

2021-12-12 17:14:18 WARNING (Wemo Events Thread) [pywemo.subscribe] Resubscribe error for <Subscription basicevent "Downstairs Bathroom Fan"> (HTTPConnectionPool(host='192.168.7.97', port=49153): Max retries exceeded with url: /upnp/event/basicevent1 (Caused by NewConnectionError('<urllib3.connection.HTTPConnection object at 0x7f5dfd9610>: Failed to establish a new connection: [Errno 111] Connection refused'))), will retry in 60s

2021-12-12 17:14:18 ERROR (Wemo Events Thread) [pywemo.ouimeaux_device] Unable to re-probe wemo <WeMo LightSwitch "Downstairs Bathroom Fan"> at 192.168.7.97

2021-12-12 17:14:23 ERROR (Wemo Events Thread) [pywemo.ouimeaux_device] Unable to reconnect with Downstairs Bathroom Fan

2021-12-12 17:14:29 WARNING (SyncWorker_7) [urllib3.connectionpool] Retrying (Retry(total=0, connect=None, read=None, redirect=None, status=None)) after connection broken by 'NewConnectionError('<urllib3.connection.HTTPConnection object at 0x7f89acd640>: Failed to establish a new connection: [Errno 111] Connection refused')': /upnp/control/basicevent1

2021-12-12 17:14:29 WARNING (SyncWorker_7) [pywemo.ouimeaux_device.api.service] Error communicating with Downstairs Bathroom Fan at 192.168.7.97:49153, HTTPException(MaxRetryError("HTTPConnectionPool(host='192.168.7.97', port=49153): Max retries exceeded with url: /upnp/control/basicevent1 (Caused by NewConnectionError('<urllib3.connection.HTTPConnection object at 0x7f53027760>: Failed to establish a new connection: [Errno 111] Connection refused'))")) retry 1

2021-12-12 17:14:29 ERROR (SyncWorker_7) [pywemo.ouimeaux_device] Unable to re-probe wemo <WeMo LightSwitch "Downstairs Bathroom Fan"> at 192.168.7.97

2021-12-12 17:14:34 ERROR (SyncWorker_7) [pywemo.ouimeaux_device] Unable to reconnect with Downstairs Bathroom Fan

2021-12-12 17:14:34 WARNING (SyncWorker_7) [urllib3.connectionpool] Retrying (Retry(total=5, connect=None, read=None, redirect=None, status=None)) after connection broken by 'NewConnectionError('<urllib3.connection.HTTPConnection object at 0x7f5a6f29d0>: Failed to establish a new connection: [Errno 111] Connection refused')': /upnp/control/basicevent1

2021-12-12 17:14:38 WARNING (SyncWorker_7) [urllib3.connectionpool] Retrying (Retry(total=4, connect=None, read=None, redirect=None, status=None)) after connection broken by 'NewConnectionError('<urllib3.connection.HTTPConnection object at 0x7f8d543940>: Failed to establish a new connection: [Errno 111] Connection refused')': /upnp/control/basicevent1

Additional information

See other similar reports documented here- https://community.home-assistant.io/t/wemo-switches-unavailable-in-hass-but-can-still-be-controlled-by-mobile-wemo-app/360147

[Rabman416]

So I have solved the problem after much effort.

In the DECO access point - I have created a Guest network which is where I have all of the wemo devices attached. I had the box checked for “Isolate from main network”. In theory, I would love to isolate the devices from the main network, for security reasons, but Home Assistant and Wemos won’t function with this checked. I probably realized this quite some time ago on the Archer router as I had this unchecked already on it.

Thanks to all for their efforts!

[mlohus93]

> @mlohus93, if you were curious to know more about the device page improvements, I added a screenshot in this PR that shows what I’m planning. pywemo/pywemo#313 (comment)

NICE!