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LIFX light shows Offline but works in the LIFX app

A LIFX bulb can be on, reachable, and happily controlled from the official LIFX app while Remote Lighting shows it as Offline. Both are telling the truth. They talk to the bulb over different paths.

The LIFX app on your phone reaches the bulb directly over your home Wi-Fi. Remote Lighting uses the LIFX cloud HTTP API, so it only sees what the cloud sees. When the cloud has no live session for a bulb, it reports the bulb as disconnected, and Remote Lighting shows it as Offline.

The tell in the API

A bulb that dropped off Wi-Fi an hour ago reports connected: false with a real last_seen timestamp and a large seconds_since_seen. A bulb the cloud has forgotten looks different: last_seen is empty, seconds_since_seen is 0, and the reported state is factory default (power off, white at 3500 Kelvin, full brightness). That combination means the cloud has no session for the bulb at all, and it will not come back on its own.

Remote Lighting flags a light in this state with a warning icon on its card. Press the icon, or the Offline button, and the dialog explains the fix below.

Check it yourself

With a LIFX API token, one request lists every bulb the cloud knows about:

curl -s -H "Authorization: Bearer YOUR_TOKEN" https://api.lifx.com/v1/lights/all

Look at connected, last_seen, and seconds_since_seen for each bulb. An empty last_seen on a bulb you can see glowing is the cloud-lost case.

The fix

1. Power-cycle the bulb at the wall switch. Wait 60 seconds and run the check again. A bulb that merely lost Wi-Fi usually reconnects here.
2. If connected is still false, open the LIFX app, open the bulb, and go to its settings.
3. Disconnect the bulb from Cloud.
4. Set the bulb up again in the LIFX app as if it were new. This creates a fresh cloud session.
5. Wait a minute. Remote Lighting polls the cloud, so the bulb returns to its live state on the next refresh.

When to contact LIFX

If a bulb stays connected: false after a power-cycle and a fresh setup, the problem is in the LIFX cloud rather than in your house. LIFX support can reset the device sessions on your account. Check the LIFX status page first, in case the whole cloud is having a bad day.

FAQ

Why does the LIFX app work when Remote Lighting says Offline?

The LIFX app talks to the bulb over your home network. Remote Lighting talks to the LIFX cloud. A bulb can answer the first while the cloud has lost its session, so each shows a different picture.

How do I know the cloud has lost the bulb rather than the bulb being off?

Query https://api.lifx.com/v1/lights/all with your token. A bulb that is simply off or out of Wi-Fi range keeps its last_seen timestamp. A bulb the cloud has lost reports an empty last_seen, seconds_since_seen of 0, and a factory-default state.

How do I reconnect a LIFX bulb to the cloud?

Power-cycle it first. If that does not help, open the bulb in the LIFX app, disconnect it from Cloud in its settings, then set it up again as a new bulb. Remote Lighting shows it live within a minute.

Will I lose my scenes or groups?

Scenes and groups live in the LIFX cloud under your account. Setting the bulb up again adds it back to the account; check that it went into the right group and location afterwards.

Still stuck? Send us a message and we usually reply within a couple of days.