AWS IOT MQTT: Getting error ERR_CERT_SYMANTEC_LEGACY in chrome AWS IOT MQTT: Getting error ERR_CERT_SYMANTEC_LEGACY in chrome google-chrome google-chrome

AWS IOT MQTT: Getting error ERR_CERT_SYMANTEC_LEGACY in chrome


Symantec certificates won't work from Chrome 70

AWS just posted a solution:

  • IoT endpoints can't be changed automatically like other AWS services because IoT devices need to be updated too.
  • IoT now provides a new endpoint to Amazon Trust Services (ATS), which uses a trusted certificate. They have -ats at the end, i.e. example-ats.iot.us-east-2.amazonaws.com. Both new and old endpoints are interoperable (the only difference is the certificate).
  • New regions launched after May, 2018 serve Amazon Trust Services signed certificates only.

How to update:

  • Run aws iot describe-endpoint --endpoint-type iot:Data-ATS
  • Update the endpoint on your web app with that new URL.

More info at: How AWS IoT Core is Helping Customers Navigate the Upcoming Distrust of Symantec Certificate Authorities


Easiest way to get your new endpoint if you're worried about adding -ats to wrong place in url:

  1. Login to AWS account
  2. Go to IoT service page
  3. Select Settings from sidebar
  4. Copy-paste new endpoint

It only displays updated AST endpoint, so there's no way for you to copy wrong link.