Alarmo not starting / no entity anymore

[jpawlowski]

Checklist

• I am using the latest version of Alarmo (latest version can be found here)
• I checked for similar existing requests (both open and closed) before posting.

Alarmo Version

v1.10.15

HA Version

2026.2.3

Bug description

Alarmo no longer starts and no entity is being created.

Steps to reproduce

There were no changes besides HA updates for the last 2 months.
I guess what needs to be done to reproduce this is to update HA to its newest version.

Relevant log output

Logger: homeassistant.components.alarm_control_panel
Quelle: helpers/entity_platform.py:680
Integration: Alarmzentrale (Dokumentation, Probleme)
Erstmals aufgetreten: 21:48:43 (1 Vorkommnis)
Zuletzt protokolliert: 21:48:43

Error adding entity alarm_control_panel.alarmo for domain alarm_control_panel with platform alarmo
Traceback (most recent call last):
  File "/usr/src/homeassistant/homeassistant/helpers/entity_platform.py", line 680, in _async_add_entities
    await self._async_add_entity(
        entity, False, entity_registry, config_subentry_id
    )
  File "/usr/src/homeassistant/homeassistant/helpers/entity_platform.py", line 998, in _async_add_entity
    await entity.add_to_platform_finish()
  File "/usr/src/homeassistant/homeassistant/helpers/entity.py", line 1393, in add_to_platform_finish
    await self.async_added_to_hass()
  File "/config/custom_components/alarmo/alarm_control_panel.py", line 779, in async_added_to_hass
    self.async_arm(self.arm_mode)
    ~~~~~~~~~~~~~~^^^^^^^^^^^^^^^
  File "/config/custom_components/alarmo/alarm_control_panel.py", line 932, in async_arm
    ].validate_arming_event(
      ~~~~~~~~~~~~~~~~~~~~~^
        area_id=self.area_id,
        ^^^^^^^^^^^^^^^^^^^^^
    ...<2 lines>...
        bypass_open_sensors=self._bypass_open_sensors,
        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    )
    ^
  File "/config/custom_components/alarmo/sensors.py", line 300, in validate_arming_event
    sensors_list = self.active_sensors_for_alarm_state(area_id, target_state)
  File "/config/custom_components/alarmo/sensors.py", line 272, in active_sensors_for_alarm_state
    for entity, config in self._config.items():
                          ^^^^^^^^^^^^^^^^^^
AttributeError: 'NoneType' object has no attribute 'items'

[cunninr2]

Experiencing similar error with same versions of software.
HA version : 2026.2.3
Alarmo version: v1.10.15

---

Logger: homeassistant.components.alarm_control_panel
Source: helpers/entity_platform.py:680
integration: Alarm control panel (documentation, issues)
First occurred: 4 March 2026 at 21:10:58 (2 occurrences)
Last logged: 4 March 2026 at 21:10:58

Error adding entity alarm_control_panel.office for domain alarm_control_panel with platform alarmo
Error adding entity alarm_control_panel.house for domain alarm_control_panel with platform alarmo
Traceback (most recent call last):
File "/usr/src/homeassistant/homeassistant/helpers/entity_platform.py", line 680, in _async_add_entities
await self._async_add_entity(
entity, False, entity_registry, config_subentry_id
)
File "/usr/src/homeassistant/homeassistant/helpers/entity_platform.py", line 998, in _async_add_entity
await entity.add_to_platform_finish()
File "/usr/src/homeassistant/homeassistant/helpers/entity.py", line 1393, in add_to_platform_finish
await self.async_added_to_hass()
File "/config/custom_components/alarmo/alarm_control_panel.py", line 779, in async_added_to_hass
self.async_arm(self.arm_mode)
~~~~~~~~~~~~~~^^^^^^^^^^^^^^^
File "/config/custom_components/alarmo/alarm_control_panel.py", line 932, in async_arm
].validate_arming_event(
~~~~~~~~~~~~~~~~~~~~~^
area_id=self.area_id,
^^^^^^^^^^^^^^^^^^^^^
...<2 lines>...
bypass_open_sensors=self._bypass_open_sensors,
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
)
^
File "/config/custom_components/alarmo/sensors.py", line 300, in validate_arming_event
sensors_list = self.active_sensors_for_alarm_state(area_id, target_state)
File "/config/custom_components/alarmo/sensors.py", line 272, in active_sensors_for_alarm_state
for entity, config in self._config.items():
^^^^^^^^^^^^^^^^^^
AttributeError: 'NoneType' object has no attribute 'items'

[nielsfaber]

Unfortunately I have no clue why this issue occurs.
It appears that the alarmo component is wrongly initialized and cannot read from the stored configuration.
This is something I never saw before and cannot reproduce (I am already on the latest version).

[cunninr2]

I managed to clear the problem by re-downloading alarmo from the HACS marketplace.

[abdess47]

I managed to clear the problem by re-downloading alarmo from the HACS marketplace.

Did you delete integration before?
I re-downloaded integration without deleting it and it's not working

[cunninr2]

I did not delete the integration. I did fully reboot my computer hosting HA

[abdess47]

I did not delete the integration. I did fully reboot my computer hosting HA

Not working for me. [

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[goah7264]

Problem solved reloading the entity here

[jpawlowski]

Restarting the integration or even HA did not help me.
I'm not sure when exactly it started working again, but now it does. Probably after upgrading to version 1.10.16, but I didn't keep track of that.

I think we can close the issue for now, even though it's annoying not to know the cause :-(

[abdess47]

You should be keeping the issues open for other people get the same thing.
For me reboot and reinstall Alarmo not solved my problem.
It still not working

Thanks

[abdess47]

Problem solved reloading the entity here

I do it and it solved my problem.

[elliot-eichen]

hmm.. I'm seeing this issue with Alarmo Version v1.10.16 and HA O/S 17.2. Appreciate any clear directions on how to fix this. All the usual (downloads, reboots, clearing the /config/ etc.) fails.