Why Won't My Home Assistant Integration Load?
- Expired or wrong credentials/token
- Device/service unreachable on the network
- Integration or HA version mismatch after update
Problem Description
A Home Assistant integration isn't loading — it shows a red "failed to set up" or "retrying," or its devices are missing. This is usually a credential, connectivity, or version problem with that specific integration rather than HA as a whole, and the logs name the cause.
Why This Happens in Real Homes
When an integration fails to load in Home Assistant, the logs are the fast path — under Settings > Devices & Services (and Settings > System > Logs) HA usually states exactly why: bad credentials, an unreachable device, or a version mismatch after an update.
Start by reading the error, then re-authenticate if it's a token/credential issue, confirm the device or service is reachable on your network, and update HA and the integration. Removing and re-adding the config entry clears a corrupted one; an API change on the vendor's side sometimes needs a newer integration version to catch up.
Symptoms
- Integration failed to set up
- Retrying setup
- Red error on the integration
- Devices missing
- Integration reloads/drops
- Auth error
- Works then fails
- Error after an HA update
Recognize these? Here's what usually causes it.
Common Causes
- Expired or wrong credentials/token
- Device/service unreachable on the network
- Integration or HA version mismatch after update
- API change on the service side
- Rate limiting
- Config entry corrupted
- Dependency/component missing
- Network/firewall blocking
Most fixes happen in the first 3 steps.
Do not factory reset your hub unless absolutely necessary as this removes all paired devices, automations, and settings. You will need to re-pair every single device from scratch which can take hours for a large setup. Always try a simple restart first.
Tools & Requirements
These tools will help you complete this fix.
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Step-by-Step Solution
Check the integration status page
Go to Settings > Devices & Services. Find the integration with issues — look for a red or yellow warning icon. Click the integration to see error details. Common statuses: 'Setup failed' (initial configuration failed), 'Not loaded' (dependency missing or config error), 'Disabled' (manually or automatically disabled). The error message usually points to the specific problem — authentication expired, device unreachable, or API key invalid.
Reload the integration
Many transient issues (timeout, temporary network error) are fixed by reloading. On the integration page, click the three-dot menu > Reload. This restarts the integration without restarting all of Home Assistant. The integration re-authenticates and reconnects to the device or service. If reload fails with the same error, the problem is persistent (not transient) and requires investigation.
Re-authenticate cloud integrations
Integrations that connect to cloud services (Google, Alexa, Nest, Ecobee, Spotify, etc.) use OAuth tokens that expire. When authentication fails, the integration shows 'Setup failed' or 'Authentication required.' Click Reconfigure on the integration page and follow the re-authentication flow (usually logging into the service and authorizing Home Assistant again). Some integrations store tokens in '.storage' — deleting the old token file and re-adding the integration from scratch fixes persistent auth issues.
Check network connectivity to the device
For local integrations (Hue, MQTT, ESPHome, Shelly, etc.): the integration communicates with devices on your local network. If a device becomes unreachable (IP changed, WiFi dropped, device rebooted), the integration shows the entity as 'unavailable.' Check the device IP in your router admin page. If the IP changed, update it in the integration config or assign a static IP/DHCP reservation to the device so it keeps the same address.
Check logs for specific error messages
Go to Settings > System > Logs and filter by the integration name. Logs show detailed error traces including API responses, connection timeouts, and parsing errors. Common patterns: 'ConnectionRefusedError' (device is off or firewall blocking), 'InvalidAuth' (wrong credentials), 'Timeout' (network or device too slow to respond), 'KeyError' (API response format changed, integration needs update). Update Home Assistant and the integration to the latest version to fix known bugs.
Quick Solutions
Still having issues? This is usually the deeper cause below.
If this comes back after following these steps, check whether a recent app or firmware update reset a default setting — the fix works, but the setting gets reverted silently.
Place your hub in a central location in your home, elevated off the floor and away from your WiFi router by at least 3 feet. This provides the best Zigbee and Z-Wave signal coverage to all corners of your house.
Home Assistant issues that only appear after restart are a well-known quirk — triggers that require prior state history simply can't fire until that history rebuilds.
- Expired or wrong credentials/token
- Device/service unreachable on the network
- Integration or HA version mismatch after update
- API change on the service side
- Rate limiting
Before you go — try one of these (they fix most cases).
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Official Manufacturer Manual
Home Assistant provides official product documentation through their online manual rather than downloadable PDF. Access setup guides, troubleshooting steps, and product specifications for your Home Assistant.
Source: home-assistant.io
Need More Help? Home Assistant Support
Note: The contact information below connects you directly to Home Assistant's official customer support team, not Trunetto. They can help with warranty claims, device replacements, and advanced technical issues.
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