https://devzone.nordicsemi.com/f/nordic-q-a/56284/mqtt-refuse-to-connectHello, I started to delvelop an program from mqtt simple, now that I almost finished I saw that mqtt is refusing to connect to my broker, I deleted all my code I wrote and tried again, but still the same problem : MQTT connect failed 5. I tried with anen-USTelligent Community 13Wed, 15 Jan 2020 08:03:47 GMThttps://devzone.nordicsemi.com/thread/229154?ContentTypeID=1Wed, 15 Jan 2020 08:03:47 GMT137ad170-7792-4731-bb38-c0d22fbe4515:f92d2e6e-4711-4ee8-b44c-36ac96fd8717Harry Wei<p class="ordinary-output target-output clearfix">If CONFIG_MQTT_BROKER_PORT=8883, you have to enable TLS. <span class="">It is recommended to test port 1883 first.</span></p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/227923?ContentTypeID=1Tue, 07 Jan 2020 14:12:58 GMT137ad170-7792-4731-bb38-c0d22fbe4515:be82f079-26cb-4f20-86e9-111d03e03f1a&#216;yvind<p>Hello,&nbsp;<br /><br />Have you tried&nbsp;with the default mqtt_simple sample? Are you able to connect your server without editing the code?</p> <p>Kind regards,<br />Øyvind</p><div style="clear:both;"></div>