Hi,
I’m having a strange issue with HASS.Agent MQTT connection, but only on one specific PC. I already have two other PCs connected via HASS.Agent → MQTT using the same broker without any problem. I use Mosquitto broker add-on and HASS.Agent on Windows 11.
On a new PC, HASS.Agent cannot connect to MQTT, even though the configuration is the same (only different username, password and client ID).
Mosquitto log shows:
New connection from <IP address> on port 1883.
Client "<client_id>" disconnected, not authorised.
after Mosquitto broker restart is shows:
Client <unknown> closed its connection.
In HASS.Agent MQTT status keeps cycling: connecting, stopped, failed.
Connection test to Home Assistant (API) works.
MQTT user/login configured in Mosquitto broker seems to disappear after a short time. Client ID is unique, Username/password are correct (doesnt contain any space etc.).
What I already tried:
- Clean uninstall and reinstall of HASS.Agent
- Removing
AppData\Roaming\HASS.Agent - Restarting Home Assistant and Mosquitto broker
- Disabling Satellite Service in HASS.Agent
- Creating new MQTT users
- Using a completely new client ID
- Turning off IPv6 on this PC (this fixed Nabu Casa cloud connection delays)
I’m not sure what else to try. Thanks for help.
