HA 2026.2.1 update breaks Cync Lights

[medic165]

Looks like the most recent Home Assistant update broke this integration. It worked great up until then.

[charlesp-l]

I, too, have the same feeling. I dont have any proof of it. Tried to reauthenticate, but still to no avail.

[rubengarciadev]

Same it's dead

[charlesp-l]

It started to work again. Maybe it needed more than to refresh a token or something like this ?

[kevin8705]

So, I've been dealing with this for months but didn't want to go fix it so I was running older HA code. I got around to it tonight...it's a 30 second fix...

1. Open /homeassistant/custom_components/cync_lights
2. Replace all instances of "ATTR_COLOR_TEMP" with "ATTR_COLOR_TEMP_KELVIN" (I had 3 instances to replace)
3. Save and reload the integration and everything should work, at least it did for me.