Skip to main content
ST_104651528-Gravel
8-Gravel
Feb 10, 2026 2:55 AM UTC
Solved

MQTT Connection to Broker Failing

I am using ThingWorx version 9.3 with the MQTT Extension version 3.1. After configuring MQTT, the connection remains in a disconnected state, but it has been verified to be connected through a client tool.

ST_10465152_0-1770691823490.png

ST_10465152_1-1770691856702.png

ST_10465152_3-1770691924639.png

 

ST_10465152_4-1770691948370.png

 

 

Surya_TiwariAnswer
16-Pearl
Feb 11, 2026 11:12 AM UTC

Hi @ST_10465152  Can you take a look at the article below and let us know your output?

https://www.ptc.com/en/support/article/CS398400

View in thread

3 replies

Surya_Tiwari16-PearlAnswer
16-Pearl
Feb 11, 2026 11:12 AM UTC

Hi @ST_10465152  Can you take a look at the article below and let us know your output?

https://www.ptc.com/en/support/article/CS398400

Translate
    ST_104651528-GravelAuthor
    8-Gravel
    Feb 12, 2026 6:46 AM UTC

    Thank you so much, it worked! I was indeed using version 2.0 of the MQTT extension, and switching to version 3.1 still didn't resolve the issue. After reading the article, I cleaned the extensions in Tomcat, restarted ThingWorx, and reinstalled the MQTT extension, which finally fixed the problem

    Translate
    Surya_Tiwari16-Pearl
    16-Pearl
    Feb 12, 2026 11:01 AM UTC

    Hi @ST_10465152   kindly mark it as solution.

    Translate
    Terms & ConditionsAccessibility statement