How to fix Tasmota MQT: Connect failed to ..., rc 5
Problem:
On the Tasmota console, you see an error message like
17:56:11.326 MQT: Connect failed to 10.19.50.10:1883, rc 5. Retry in 50 sec
Solution
Your MQTT username/password is wrong. Check if they match what you have configured in your server in the Tasmota MQTT configuration page.
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