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ST_104651528-Gravel
8-Gravel
February 10, 2026
Solved

MQTT Connection to Broker Failing

  • February 10, 2026
  • 1 reply
  • 85 views

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.

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Best answer by Surya_Tiwari

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

1 reply

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Surya_Tiwari16-PearlAnswer
16-Pearl
February 11, 2026

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

    S
    ST_104651528-GravelAuthor
    8-Gravel
    February 12, 2026

    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

    S
    Surya_Tiwari16-Pearl
    16-Pearl
    February 12, 2026

    Hi @ST_10465152   kindly mark it as solution.

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