Very slow integration with Alexa

deCONZ 3rd Party Integrations
111

I’m running deCONZ Version 2.32.5 (Raspberry 4) on Port 80 and a nginx Reverse Proxy for Port 443.

Alexa was able to control existing devices, but could not discover any new ones. Even when clicking “Authenticate App” in Phoscon, the discovery process failed.

The issue was the SSDP discovery (UPnP) being “stuck”.

Step-by-Step Fix:

  1. In Phoscon, go to Settings > Gateway > Advanced.
  2. Toggle “Enable Discovery” (Discovery aktivieren) (the UPnP setting) OFF.
  3. Wait 10 seconds and toggle it back ON.
    This forces deCONZ to broadcast its presence (SSDP) into the network again, which is often needed when running behind a proxy or after network changes.
  4. Click “Authenticate App” (App verbinden) in Phoscon.
  5. Immediately ask: “Alexa, discover my devices.”

After that fix my new device was successful discovered by Alexa.