Tado integration in a "The authentication process timed out. Please try again." loop

rgruyters · January 16, 2026, 8:05am

Hi, I noticed today that my Tado integration stopped working. When reloaded it stated to re-authenticate with Tado. Tried it, but when it succesfully authenticated it HA gives me the message “The authentication process timed out. Please try again.”. When try to dismiss the message by pressing submit, the message keeps on coming back.

I know in the past there were some issues with Tado integration, but wondering is this a new issue?

UPDATE:

Here is some info about my HA:

version: 2026.1.1
Install: HAOS
OS: 16.3
Frontend: 20260107.1

Traceback (most recent call last):
  File "/usr/local/lib/python3.13/site-packages/aiohttp/web_protocol.py", line 510, in _handle_request
    resp = await request_handler(request)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/local/lib/python3.13/site-packages/aiohttp/web_app.py", line 569, in _handle
    return await handler(request)
           ^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/local/lib/python3.13/site-packages/aiohttp/web_middlewares.py", line 117, in impl
    return await handler(request)
           ^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/src/homeassistant/homeassistant/components/http/security_filter.py", line 92, in security_filter_middleware
    return await handler(request)
           ^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/src/homeassistant/homeassistant/components/http/forwarded.py", line 81, in forwarded_middleware
    return await handler(request)
           ^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/src/homeassistant/homeassistant/components/http/request_context.py", line 26, in request_context_middleware
    return await handler(request)
           ^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/src/homeassistant/homeassistant/components/http/ban.py", line 86, in ban_middleware
    return await handler(request)
           ^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/src/homeassistant/homeassistant/components/http/auth.py", line 242, in auth_middleware
    return await handler(request)
           ^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/src/homeassistant/homeassistant/components/http/headers.py", line 41, in headers_middleware
    response = await handler(request)
               ^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/src/homeassistant/homeassistant/helpers/http.py", line 73, in handle
    result = await handler(request, **request.match_info)
             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/src/homeassistant/homeassistant/components/http/decorators.py", line 83, in with_admin
    return await func(self, request, *args, **kwargs)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/src/homeassistant/homeassistant/components/config/config_entries.py", line 234, in post
    return await super().post(request, flow_id)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/src/homeassistant/homeassistant/components/http/data_validator.py", line 74, in wrapper
    return await method(view, request, data, *args, **kwargs)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/src/homeassistant/homeassistant/helpers/data_entry_flow.py", line 121, in post
    result = await self._flow_mgr.async_configure(flow_id, data)
             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/src/homeassistant/homeassistant/data_entry_flow.py", line 346, in async_configure
    result = await self._async_configure(flow_id, user_input)
             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/src/homeassistant/homeassistant/data_entry_flow.py", line 393, in _async_configure
    result = await self._async_handle_step(
             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
        flow, cur_step["step_id"], user_input
        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    )
    ^
  File "/usr/src/homeassistant/homeassistant/data_entry_flow.py", line 493, in _async_handle_step
    result: _FlowResultT = await getattr(flow, method)(user_input)
                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/src/homeassistant/homeassistant/components/tado/config_flow.py", line 158, in async_step_timeout
    return await self.async_step_user()
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/src/homeassistant/homeassistant/components/tado/config_flow.py", line 111, in async_step_user
    "url": tado_device_url,
           ^^^^^^^^^^^^^^^
UnboundLocalError: cannot access local variable 'tado_device_url' where it is not associated with a value

sajikur · January 16, 2026, 9:37am

same here
“The authentication process timed out. Please try again.”

TrafficJam · January 16, 2026, 9:48am

Same here, I’m having the same issue, being unable to get the integration to work.

SaintTDI · January 16, 2026, 10:04am

Hello,

Same issue here, I tried the authentication several times but nothing.

I’m using:
Home Assistant OS
Core 2026.1.1
Supervisor 2026.01.1
Operating System 16.3
Frontend 20260107.1

Here are the logs, maybe they can help

2026-01-16 10:49:36.390 WARNING (MainThread) [homeassistant.config_entries] Config entry 'Frusty_Home' for tado integration could not authenticate: Device login flow status is PENDING. Starting re-authentication.
2026-01-16 10:49:51.597 ERROR (MainThread) [homeassistant.components.tado.config_flow] Error while waiting for device activation
Traceback (most recent call last):
  File "/usr/src/homeassistant/homeassistant/components/tado/config_flow.py", line 82, in _wait_for_login
    await self.hass.async_add_executor_job(self.tado.device_activation)
  File "/usr/local/lib/python3.13/concurrent/futures/thread.py", line 59, in run
    result = self.fn(*self.args, **self.kwargs)
  File "/usr/local/lib/python3.13/site-packages/PyTado/interface/interface.py", line 107, in device_activation
    self._http.device_activation()
    ~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^
  File "/usr/local/lib/python3.13/site-packages/PyTado/http.py", line 587, in device_activation
    self._device_ready()
    ~~~~~~~~~~~~~~~~~~^^
  File "/usr/local/lib/python3.13/site-packages/PyTado/http.py", line 591, in _device_ready
    self._id = self._get_id()
               ~~~~~~~~~~~~^^
  File "/usr/local/lib/python3.13/site-packages/PyTado/http.py", line 602, in _get_id
    homes_ = self.request(request)["homes"]
             ~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^
KeyError: 'homes'
2026-01-16 10:49:59.275 ERROR (MainThread) [aiohttp.server] Error handling request from 192.168.0.1
Traceback (most recent call last):
  File "/usr/local/lib/python3.13/site-packages/aiohttp/web_protocol.py", line 510, in _handle_request
    resp = await request_handler(request)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/local/lib/python3.13/site-packages/aiohttp/web_app.py", line 569, in _handle
    return await handler(request)
           ^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/local/lib/python3.13/site-packages/aiohttp/web_middlewares.py", line 117, in impl
    return await handler(request)
           ^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/src/homeassistant/homeassistant/components/http/security_filter.py", line 92, in security_filter_middleware
    return await handler(request)
           ^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/src/homeassistant/homeassistant/components/http/forwarded.py", line 87, in forwarded_middleware
    return await handler(request)
           ^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/src/homeassistant/homeassistant/components/http/request_context.py", line 26, in request_context_middleware
    return await handler(request)
           ^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/src/homeassistant/homeassistant/components/http/ban.py", line 86, in ban_middleware
    return await handler(request)
           ^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/src/homeassistant/homeassistant/components/http/auth.py", line 242, in auth_middleware
    return await handler(request)
           ^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/src/homeassistant/homeassistant/components/http/headers.py", line 41, in headers_middleware
    response = await handler(request)
               ^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/src/homeassistant/homeassistant/helpers/http.py", line 73, in handle
    result = await handler(request, **request.match_info)
             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/src/homeassistant/homeassistant/components/http/decorators.py", line 83, in with_admin
    return await func(self, request, *args, **kwargs)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/src/homeassistant/homeassistant/components/config/config_entries.py", line 234, in post
    return await super().post(request, flow_id)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/src/homeassistant/homeassistant/components/http/data_validator.py", line 74, in wrapper
    return await method(view, request, data, *args, **kwargs)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/src/homeassistant/homeassistant/helpers/data_entry_flow.py", line 121, in post
    result = await self._flow_mgr.async_configure(flow_id, data)
             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/src/homeassistant/homeassistant/data_entry_flow.py", line 346, in async_configure
    result = await self._async_configure(flow_id, user_input)
             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/src/homeassistant/homeassistant/data_entry_flow.py", line 393, in _async_configure
    result = await self._async_handle_step(
             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
        flow, cur_step["step_id"], user_input
        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    )
    ^
  File "/usr/src/homeassistant/homeassistant/data_entry_flow.py", line 493, in _async_handle_step
    result: _FlowResultT = await getattr(flow, method)(user_input)
                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/src/homeassistant/homeassistant/components/tado/config_flow.py", line 158, in async_step_timeout
    return await self.async_step_user()
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/src/homeassistant/homeassistant/components/tado/config_flow.py", line 111, in async_step_user
    "url": tado_device_url,
           ^^^^^^^^^^^^^^^
UnboundLocalError: cannot access local variable 'tado_device_url' where it is not associated with a value
2026-01-16 10:50:04.294 ERROR (MainThread) [aiohttp.server] Error handling request from 192.168.0.1
Traceback (most recent call last):
  File "/usr/local/lib/python3.13/site-packages/aiohttp/web_protocol.py", line 510, in _handle_request
    resp = await request_handler(request)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/local/lib/python3.13/site-packages/aiohttp/web_app.py", line 569, in _handle
    return await handler(request)
           ^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/local/lib/python3.13/site-packages/aiohttp/web_middlewares.py", line 117, in impl
    return await handler(request)
           ^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/src/homeassistant/homeassistant/components/http/security_filter.py", line 92, in security_filter_middleware
    return await handler(request)
           ^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/src/homeassistant/homeassistant/components/http/forwarded.py", line 87, in forwarded_middleware
    return await handler(request)
           ^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/src/homeassistant/homeassistant/components/http/request_context.py", line 26, in request_context_middleware
    return await handler(request)
           ^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/src/homeassistant/homeassistant/components/http/ban.py", line 86, in ban_middleware
    return await handler(request)
           ^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/src/homeassistant/homeassistant/components/http/auth.py", line 242, in auth_middleware
    return await handler(request)
           ^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/src/homeassistant/homeassistant/components/http/headers.py", line 41, in headers_middleware
    response = await handler(request)
               ^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/src/homeassistant/homeassistant/helpers/http.py", line 73, in handle
    result = await handler(request, **request.match_info)
             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/src/homeassistant/homeassistant/components/http/decorators.py", line 83, in with_admin
    return await func(self, request, *args, **kwargs)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/src/homeassistant/homeassistant/components/config/config_entries.py", line 234, in post
    return await super().post(request, flow_id)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/src/homeassistant/homeassistant/components/http/data_validator.py", line 74, in wrapper
    return await method(view, request, data, *args, **kwargs)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/src/homeassistant/homeassistant/helpers/data_entry_flow.py", line 121, in post
    result = await self._flow_mgr.async_configure(flow_id, data)
             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/src/homeassistant/homeassistant/data_entry_flow.py", line 346, in async_configure
    result = await self._async_configure(flow_id, user_input)
             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/src/homeassistant/homeassistant/data_entry_flow.py", line 393, in _async_configure
    result = await self._async_handle_step(
             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
        flow, cur_step["step_id"], user_input
        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    )
    ^
  File "/usr/src/homeassistant/homeassistant/data_entry_flow.py", line 493, in _async_handle_step
    result: _FlowResultT = await getattr(flow, method)(user_input)
                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/src/homeassistant/homeassistant/components/tado/config_flow.py", line 158, in async_step_timeout
    return await self.async_step_user()
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/src/homeassistant/homeassistant/components/tado/config_flow.py", line 111, in async_step_user
    "url": tado_device_url,
           ^^^^^^^^^^^^^^^
UnboundLocalError: cannot access local variable 'tado_device_url' where it is not associated with a value
2026-01-16 10:50:04.341 ERROR (MainThread) [homeassistant.components.tado.config_flow] Error while waiting for device activation
Traceback (most recent call last):
  File "/usr/src/homeassistant/homeassistant/components/tado/config_flow.py", line 82, in _wait_for_login
    await self.hass.async_add_executor_job(self.tado.device_activation)
  File "/usr/local/lib/python3.13/concurrent/futures/thread.py", line 59, in run
    result = self.fn(*self.args, **self.kwargs)
  File "/usr/local/lib/python3.13/site-packages/PyTado/interface/interface.py", line 107, in device_activation
    self._http.device_activation()
    ~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^
  File "/usr/local/lib/python3.13/site-packages/PyTado/http.py", line 584, in device_activation
    if self._check_device_activation():
       ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^
  File "/usr/local/lib/python3.13/site-packages/PyTado/http.py", line 575, in _check_device_activation
    raise TadoException(f"Login failed. Reason: {token_response.reason}")
PyTado.exceptions.TadoException: Login failed. Reason: Bad Request
2026-01-16 10:50:04.344 ERROR (MainThread) [homeassistant] Error doing job: Task exception was never retrieved (task: None)
Traceback (most recent call last):
  File "/usr/src/homeassistant/homeassistant/components/tado/config_flow.py", line 82, in _wait_for_login
    await self.hass.async_add_executor_job(self.tado.device_activation)
  File "/usr/local/lib/python3.13/concurrent/futures/thread.py", line 59, in run
    result = self.fn(*self.args, **self.kwargs)
  File "/usr/local/lib/python3.13/site-packages/PyTado/interface/interface.py", line 107, in device_activation
    self._http.device_activation()
    ~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^
  File "/usr/local/lib/python3.13/site-packages/PyTado/http.py", line 584, in device_activation
    if self._check_device_activation():
       ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^
  File "/usr/local/lib/python3.13/site-packages/PyTado/http.py", line 575, in _check_device_activation
    raise TadoException(f"Login failed. Reason: {token_response.reason}")
PyTado.exceptions.TadoException: Login failed. Reason: Bad Request

The above exception was the direct cause of the following exception:

Traceback (most recent call last):
  File "/usr/src/homeassistant/homeassistant/components/tado/config_flow.py", line 85, in _wait_for_login
    raise CannotConnect from ex
homeassistant.components.tado.config_flow.CannotConnect
2026-01-16 10:50:08.008 ERROR (MainThread) [aiohttp.server] Error handling request from 192.168.0.1
Traceback (most recent call last):
  File "/usr/local/lib/python3.13/site-packages/aiohttp/web_protocol.py", line 510, in _handle_request
    resp = await request_handler(request)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/local/lib/python3.13/site-packages/aiohttp/web_app.py", line 569, in _handle
    return await handler(request)
           ^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/local/lib/python3.13/site-packages/aiohttp/web_middlewares.py", line 117, in impl
    return await handler(request)
           ^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/src/homeassistant/homeassistant/components/http/security_filter.py", line 92, in security_filter_middleware
    return await handler(request)
           ^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/src/homeassistant/homeassistant/components/http/forwarded.py", line 87, in forwarded_middleware
    return await handler(request)
           ^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/src/homeassistant/homeassistant/components/http/request_context.py", line 26, in request_context_middleware
    return await handler(request)
           ^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/src/homeassistant/homeassistant/components/http/ban.py", line 86, in ban_middleware
    return await handler(request)
           ^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/src/homeassistant/homeassistant/components/http/auth.py", line 242, in auth_middleware
    return await handler(request)
           ^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/src/homeassistant/homeassistant/components/http/headers.py", line 41, in headers_middleware
    response = await handler(request)
               ^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/src/homeassistant/homeassistant/helpers/http.py", line 73, in handle
    result = await handler(request, **request.match_info)
             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/src/homeassistant/homeassistant/components/http/decorators.py", line 83, in with_admin
    return await func(self, request, *args, **kwargs)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/src/homeassistant/homeassistant/components/config/config_entries.py", line 234, in post
    return await super().post(request, flow_id)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/src/homeassistant/homeassistant/components/http/data_validator.py", line 74, in wrapper
    return await method(view, request, data, *args, **kwargs)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/src/homeassistant/homeassistant/helpers/data_entry_flow.py", line 121, in post
    result = await self._flow_mgr.async_configure(flow_id, data)
             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/src/homeassistant/homeassistant/data_entry_flow.py", line 346, in async_configure
    result = await self._async_configure(flow_id, user_input)
             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/src/homeassistant/homeassistant/data_entry_flow.py", line 393, in _async_configure
    result = await self._async_handle_step(
             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
        flow, cur_step["step_id"], user_input
        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    )
    ^
  File "/usr/src/homeassistant/homeassistant/data_entry_flow.py", line 493, in _async_handle_step
    result: _FlowResultT = await getattr(flow, method)(user_input)
                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/src/homeassistant/homeassistant/components/tado/config_flow.py", line 158, in async_step_timeout
    return await self.async_step_user()
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/src/homeassistant/homeassistant/components/tado/config_flow.py", line 111, in async_step_user
    "url": tado_device_url,
           ^^^^^^^^^^^^^^^
UnboundLocalError: cannot access local variable 'tado_device_url' where it is not associated with a value
2026-01-16 10:50:09.359 ERROR (MainThread) [homeassistant.components.tado.config_flow] Error while waiting for device activation
Traceback (most recent call last):
  File "/usr/src/homeassistant/homeassistant/components/tado/config_flow.py", line 82, in _wait_for_login
    await self.hass.async_add_executor_job(self.tado.device_activation)
  File "/usr/local/lib/python3.13/concurrent/futures/thread.py", line 59, in run
    result = self.fn(*self.args, **self.kwargs)
  File "/usr/local/lib/python3.13/site-packages/PyTado/interface/interface.py", line 107, in device_activation
    self._http.device_activation()
    ~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^
  File "/usr/local/lib/python3.13/site-packages/PyTado/http.py", line 584, in device_activation
    if self._check_device_activation():
       ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^
  File "/usr/local/lib/python3.13/site-packages/PyTado/http.py", line 575, in _check_device_activation
    raise TadoException(f"Login failed. Reason: {token_response.reason}")
PyTado.exceptions.TadoException: Login failed. Reason: Bad Request
2026-01-16 10:50:09.362 ERROR (MainThread) [homeassistant] Error doing job: Task exception was never retrieved (task: None)
Traceback (most recent call last):
  File "/usr/src/homeassistant/homeassistant/components/tado/config_flow.py", line 82, in _wait_for_login
    await self.hass.async_add_executor_job(self.tado.device_activation)
  File "/usr/local/lib/python3.13/concurrent/futures/thread.py", line 59, in run
    result = self.fn(*self.args, **self.kwargs)
  File "/usr/local/lib/python3.13/site-packages/PyTado/interface/interface.py", line 107, in device_activation
    self._http.device_activation()
    ~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^
  File "/usr/local/lib/python3.13/site-packages/PyTado/http.py", line 584, in device_activation
    if self._check_device_activation():
       ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^
  File "/usr/local/lib/python3.13/site-packages/PyTado/http.py", line 575, in _check_device_activation
    raise TadoException(f"Login failed. Reason: {token_response.reason}")
PyTado.exceptions.TadoException: Login failed. Reason: Bad Request

The above exception was the direct cause of the following exception:

Traceback (most recent call last):
  File "/usr/src/homeassistant/homeassistant/components/tado/config_flow.py", line 85, in _wait_for_login
    raise CannotConnect from ex
homeassistant.components.tado.config_flow.CannotConnect
2026-01-16 10:50:13.073 ERROR (MainThread) [homeassistant.components.tado.config_flow] Error while waiting for device activation
Traceback (most recent call last):
  File "/usr/src/homeassistant/homeassistant/components/tado/config_flow.py", line 82, in _wait_for_login
    await self.hass.async_add_executor_job(self.tado.device_activation)
  File "/usr/local/lib/python3.13/concurrent/futures/thread.py", line 59, in run
    result = self.fn(*self.args, **self.kwargs)
  File "/usr/local/lib/python3.13/site-packages/PyTado/interface/interface.py", line 107, in device_activation
    self._http.device_activation()
    ~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^
  File "/usr/local/lib/python3.13/site-packages/PyTado/http.py", line 584, in device_activation
    if self._check_device_activation():
       ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^
  File "/usr/local/lib/python3.13/site-packages/PyTado/http.py", line 575, in _check_device_activation
    raise TadoException(f"Login failed. Reason: {token_response.reason}")
PyTado.exceptions.TadoException: Login failed. Reason: Bad Request

Clam58 · January 16, 2026, 10:19am

Exactly the same for me this morning.

Quattro11 · January 16, 2026, 10:21am

Same here.

oaledrent · January 16, 2026, 10:32am

Same here since 07:08 GMT +1.

dagoosemusic · January 16, 2026, 10:55am

Glad to see I’m not the only one. It was working fine before I had reboot HA after upgrading some HACS integration. It’s weird to see that it confirms fine at first but then back in HA you get the time out.

Mo7y · January 16, 2026, 11:11am

Same here, after a reboot started getting:
The authentication process timed out. Please try again.

Unknown error occurred

abbar21 · January 16, 2026, 11:23am

I’m happy because I’m not alone

kinga · January 16, 2026, 11:51am

I was having the same issue this morning. Tried to remove the integration, restart and everything but the problem was still there.
I tried again 30 minutes ago and now it’s back up and working for me. I don’t have any Tado subscription, just using the base account

Clam58 · January 16, 2026, 12:00pm

Yes, I’ve just been able to authenticate, and the integration is now working again!

Mo7y · January 16, 2026, 12:09pm

The integration is back now

rgruyters · January 16, 2026, 12:13pm

Just tried re-authenticate, and works again for me.

oaledrent · January 16, 2026, 1:46pm

confirmed it works after restarting HA

Mo7y · January 16, 2026, 10:37pm

Is it down again? Had the same issue after updating HA and restarting

IOT7712 · January 17, 2026, 12:05am

Is that for the Tado yoyo?

norman.s · January 17, 2026, 7:22am

Yes, seems to be down, I‘m experiencing the same situation like yesterday morning.

Clam58 · January 17, 2026, 8:25am

Yes, same again for me. Very annoying.

AldoQ · January 17, 2026, 8:54am

I also can confirm experiencing the same issue. With so many having this and Tado past attempts to stop their API being used my first thoughts is that this maybe something on the side of Tado? And we need to hope its just a bug and not a ‘feature’?

If its the latter to drive people to pay it means I will start looking for new hardware to replace Tado. But not going to jump to conclusions. But mindfull with all the bad decisions they have been making regarding their API.