home-assistant/core · error · UpdateFailed

Error communicating with API: {err}

Error message

Error communicating with API: {err}

What it means

UpdateFailed('Error communicating with API: {err}') raised by the Aladdin Connect coordinator for aiohttp.ClientError that is not a 4xx ClientResponseError — i.e. 5xx server errors and transport-level failures (DNS, connection refused, timeouts surfacing as ClientError). HA shows the message and retries the poll with backoff.

Source

Thrown at homeassistant/components/aladdin_connect/coordinator.py:52

            hass,
            logger=_LOGGER,
            config_entry=entry,
            name="Aladdin Connect Coordinator",
            update_interval=SCAN_INTERVAL,
        )
        self.client = client

    @override
    async def _async_update_data(self) -> dict[str, GarageDoor]:
        """Fetch data from the Aladdin Connect API."""
        try:
            doors = await self.client.get_doors()
        except aiohttp.ClientResponseError as err:
            if 400 <= err.status < 500:
                raise ConfigEntryAuthFailed(err) from err
            raise UpdateFailed(f"Error communicating with API: {err}") from err
        except aiohttp.ClientError as err:
            raise UpdateFailed(f"Error communicating with API: {err}") from err

        return {door.unique_id: door for door in doors}

View on GitHub (pinned to 58a3fdb3ea)

Solutions

1. Verify outbound internet and DNS from the HA host.
2. Check Aladdin Connect service status / app behavior; if the app also fails, wait for recovery.
3. Let the coordinator retry — transient ClientErrors self-heal.
4. Persistent failure with a specific {err} (e.g. certificate) points to proxy/firewall interception to fix locally.

try:
    doors = await client.get_doors()
except aiohttp.ClientError as err:
    raise UpdateFailed(f"Error communicating with API: {err}") from err

When it happens

Trigger: get_doors() request failing at transport level (HA offline, DNS failure, Aladdin API unreachable) or returning HTTP 5xx.

Common situations: Aladdin/Genie cloud outage; local internet drop; DNS problems on the HA host; TLS interception breaking the session.

Related errors

• Unable find multi-factor auth module: {mfa_module_id}
• {error}
• Cannot connect to Ambient Network
• Error communicating with Homeassistant Analytics
• {err}

AI-assisted analysis of home-assistant/core@58a3fdb3ea (2026-08-14). Data as JSON: /api/errors/f03bd0bb04162f23. Report an issue: GitHub.