Remote connection failing

Configuration
1

I lost remote connection to HA. I’ve restarted system, logged out and in to the cloud, reinstalled app etc. but it doesn’t work. HA has connection but still I get this message :

URLSessionTask failed with error.

Alamofire.AFError

Code:
13

With local connection Home Assistant Cloud says in remote access : No connection

Any ideas?

2

What devices? What platforms? What IP addresses? What addons? What error log messages? Any VPN/DuckDNS/customised networking involved?

3

Hi,

I am fairly new to Home Assistant. I have HA Green, and everything has worked well for about six months. I was traveling and didn’t make any changes during that time, but when I returned, I couldn’t connect to the app anymore and started investigating the issue.

Remote connection with the iOS app and browser does not work, but local connection with the browser works.

  • Asennusmenetelmä Home Assistant OS
  • Core 2025.12.1
  • Supervisor 2025.12.2
  • Operating System 16.3
  • Käyttöliittymä 20251203.1

I find the following error in the log:

Lokikirjaaja: hass_nabucasa.remote
Lähde: /usr/local/lib/python3.13/site-packages/hass_nabucasa/remote.py:576
Ensimmäistä kertaa ilmennyt: 00.44.57 (1 esiintymä)
Viimeksi kirjattu: 00.44.57

Unexpected error in Remote UI loop
Traceback (most recent call last):

  • File “/usr/local/lib/python3.13/site-packages/hass_nabucasa/remote.py”, line 532, in _certificate_handler*
  • if not await self.load_backend():*
  •       ^^^^^^^^^^^^^^^^^^^^^^^^^*
  • File “/usr/local/lib/python3.13/site-packages/hass_nabucasa/remote.py”, line 319, in load_backend*
  • context = await self._create_context()*
  •          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^*
  • File “/usr/local/lib/python3.13/site-packages/hass_nabucasa/remote.py”, line 190, in _create_context*
  • await self.cloud.run_executor(*
  • …<3 lines>…*
  • )*
  • File “/usr/local/lib/python3.13/concurrent/futures/thread.py”, line 59, in run*
  • result = self.fn(*self.args, *self.kwargs)
  • File “/usr/src/homeassistant/homeassistant/util/loop.py”, line 201, in protected_loop_func*
  • return func(*args, *kwargs)
    FileNotFoundError: [Errno 2] No such file or directory
4

What have you updated since your departure? Any changes to your network?

5

Nothing before I found the issue. Core and Thermia after that. Haven’t change anything in my network but rebooted it too.

6

Try uninstalling and reinstalling your companion app on your Apple device.

Try bringing up your HomeAssistant Green in safe mode.

7

Same issue … started recently after an update… No other changes to the environment