Tado Throwing 403 error

[ThatDeltaGuy]

The problem

The Tado integration has just started throwing a 403 error. I've checked, I can still access the website, and the password is correct. Re-configuring throws the same error. I've not changed the configuration or added any new Tado devices in months.

What version of Home Assistant Core has the issue?

core-2025.3.4

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

tado

Link to integration documentation on our website

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

Diagnostics information

No response

Example YAML snippet

Anything in the logs that might be useful for us?

Logger: homeassistant.components.tado.config_flow
Source: components/tado/config_flow.py:131
integration: Tado (documentation, issues)
First occurred: 09:11:54 (2 occurrences)
Last logged: 09:12:09

Unexpected exception
Traceback (most recent call last):
  File "/usr/src/homeassistant/homeassistant/components/tado/config_flow.py", line 131, in async_step_reconfigure
    await validate_input(self.hass, user_input)
  File "/usr/src/homeassistant/homeassistant/components/tado/config_flow.py", line 52, in validate_input
    tado = await hass.async_add_executor_job(
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
        Tado, data[CONF_USERNAME], data[CONF_PASSWORD]
        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    )
    ^
  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 46, in __init__
    self._http = Http(
                 ~~~~^
        username=username,
        ^^^^^^^^^^^^^^^^^^
    ...<2 lines>...
        debug=debug,
        ^^^^^^^^^^^^
    )
    ^
  File "/usr/local/lib/python3.13/site-packages/PyTado/http.py", line 153, in __init__
    self._id, self._token_refresh = self._login()
                                    ~~~~~~~~~~~^^
  File "/usr/local/lib/python3.13/site-packages/PyTado/http.py", line 333, in _login
    raise TadoException(
        f"Login failed for unknown reason with status code {response.status_code}"
    )
PyTado.exceptions.TadoException: Login failed for unknown reason with status code 403

Additional information

No response

[home-assistant]

Hey there @erwindouna, mind taking a look at this issue as it has been labeled with an integration (tado) you are listed as a code owner for? Thanks!

Code owner commands

Code owners of tado can trigger bot actions by commenting:

• @home-assistant close Closes the issue.
• @home-assistant rename Awesome new title Renames the issue.
• @home-assistant reopen Reopen the issue.
• @home-assistant unassign tado Removes the current integration label and assignees on the issue, add the integration domain after the command.
• @home-assistant add-label needs-more-information Add a label (needs-more-information, problem in dependency, problem in custom component) to the issue.
• @home-assistant remove-label needs-more-information Remove a label (needs-more-information, problem in dependency, problem in custom component) on the issue.

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[BastianPoe]

I have the same issue, the specific error message is Einrichtungsfehler, wird erneut versucht: Error during Tado setup: Login failed for unknown reason with status code 403. As the reporter, I have not changed my credentials or configuration and login into the tado mobile and web apps still work as before.

[erwindouna]

This is known issue and a fix is out on the Beta. Please enroll to the update to receive the fix.

[RezzZ]

hope to see it soon in the next official release :). Waiting for a fix here too. Thanks Erwin!