I am attempting to deploy a group of Chromebooks that will automatically launch a Horizon desktop without needing the user to authenticate for a classroom scenario. I am managing the Chromebooks centrally via Google admin and I have successfully configured the Horizon Client to launch from Kiosk mode with a JSON file that provides connection server settings. My connection server has been configured to authenticate on MAC addresses and the automatic login functionality was successfully tested with a WYSE thin client.

I cannot replicate this with automatic connection with the Chromebook. The client will launch, and select the default connection server, but the client will not authenticate without entering a credential. I suspect that am missing a configuration setting in the JSON file that will trigger the client to authenticate via the machine's MAC. I've attempted several variations of the JSON file similar to the one below (sourced from https://chrome-experts.neverware.com/s/article/Deploying-Configuring-VMware-Horizon-View-in-Kiosk-mode-using-Google-Admi… ) with no success. Can anyone provide any insight?

{
  "broker_list": {
      "Value": {
           "settings": {
                "server-list": [{
                     "server": "172.16.12.76",
                     "default": true,
                     "description": "CloudReady Lab",
                     "domain": "Cloudsteady.lab"
                }]
          }
      }
  }
}