# MQTT Transmission 5.0.3 connection hangs up after Ignition restart

**URL:** https://forum.cirrus-link.com/t/mqtt-transmission-5-0-3-connection-hangs-up-after-ignition-restart/871
**Category:** Ignition Modules
**Created:** [June 27, 2026, 4:43am UTC](https://forum.cirrus-link.com/t/mqtt-transmission-5-0-3-connection-hangs-up-after-ignition-restart/871 "2026-06-27T04:43:17Z")
**Posts on this page:** 3
**Page:** 1

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### Author: ![jhottell](https://avatars.discourse-cdn.com/v4/letter/j/91b2a8/32.png) [@jhottell](https://forum.cirrus-link.com/u/jhottell)
#### Post date: [June 27, 2026, 4:43am UTC](https://forum.cirrus-link.com/t/mqtt-transmission-5-0-3-connection-hangs-up-after-ignition-restart/871/1 "2026-06-27T04:43:17Z")

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Hello, I put in a ticket a week ago and haven’t heard back, I have a customer with some equipment we can’t deploy because when Ignition edge restarts the MQTT transmission server connection gets hung up in an unknown state and it creates a new Chariot SCADA connection. Editing the old connection, disabling then enabling it works again until it is restarted. The transmission connection is connecting to AWS IOT hub with certificates and TLS. This can be recreated with an absolutely clean fresh Ignition install.

Ignition 8.3.6 and Ignition 8.3.7 with MQTT transmission 5.0.3

 ![After restart](https://canada1.discourse-cdn.com/flex028/uploads/cirrus_link/original/1X/afb37cb2f40b486ea062538c8beb706eeb0b4dd6.png)

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### Author: ![dan.potter](https://avatars.discourse-cdn.com/v4/letter/d/6de8d8/32.png) [@dan.potter](https://forum.cirrus-link.com/u/dan.potter)
#### Post date: [June 28, 2026, 1:55pm UTC](https://forum.cirrus-link.com/t/mqtt-transmission-5-0-3-connection-hangs-up-after-ignition-restart/871/2 "2026-06-28T13:55:34Z")

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jt,

I did not find your support request in our queue. Did you receive our auto-generated reply?

Our support email: support (at) [cirrus-link.com](http://cirrus-link.com) Don’t forget the hyphen.

This ‘unknown’ status is a bug that was addressed in our nightly v5.0.4 modules which are available below:

> **[Nightly Module Builds - MQTT Modules for Ignition 8.3 - Confluence](https://docs.chariot.io/display/CLD83/Nightly+Module+Builds)**

Unfortunately the full release is not expected until mid-July.

Or you can, as a workaround, create a Gateway Startup Script (example below).

```auto
def onStartup():
    sleep(10)
    config = system.cirruslink.transmission.readConfig("transmitter", "Example Transmitter")
    system.cirruslink.transmission.updateConfig("transmitter", "Example Transmitter", "MergeOverwrite", config)

```

Regards,

Dan

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<div class="post-metadata">

### Author: ![jhottell](https://avatars.discourse-cdn.com/v4/letter/j/91b2a8/32.png) [@jhottell](https://forum.cirrus-link.com/u/jhottell)
#### Post date: [June 28, 2026, 7:03pm UTC](https://forum.cirrus-link.com/t/mqtt-transmission-5-0-3-connection-hangs-up-after-ignition-restart/871/3 "2026-06-28T19:03:46Z")

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I was suspicious when I didn’t get a confirmation email, I may have messed it up. Thanks for the response dan.