Views:
After enabling Activity Monitoring, if you encounter an error, "MQTT Connection offline," follow the steps below to troubleshoot this error.

Procedure

  1. Ensure the agents have outbound connectivity to Trend Vision One.
    If you have a firewall or proxy, add the following uniform resource locator (URL) address to the allow list and the secure sockets layer (SSL) / transport layer security (TLS) inspection settings:
    agent-comm.workload.<cloudoneregion>.cloudone.trendmicro.com
    • For accounts created before August 4, 2021, use us-1 for the region.
    • For accounts created on or after August 4, 2021, verify the region in Account Settings, ? > ?
    See Required Workload Security URLs for the latest address list.
  2. Verify the agent Activity Monitoring configuration on the machine.
    • For Windows, as an Administrator, enter the following commands in a command prompt:
      cd C:\Program Files\Trend Micro\Deep Security Agent
      sendCommand.cmd --get GetConfiguration | findstr -i Sensor
    • For Linux, enter the following commend:
      sudo /opt/ds_agent/sendCommand --get GetConfiguration | grep -i "sensor"
    The result should be as follows:
    sensorActivityEnabled=true
    Feature SENSOR state= 1
  3. Ensure the Internet of Things (IoT) connection is online.
    • For Windows, as an Administrator, enter the following commands in a command prompt:
      cd C:\Program Files\Trend Micro\Deep Security Agent
      sendCommand --get GetIoT
    • For Linux, enter the following commend:
      sudo /opt/ds_agent/sendCommand --get GetIoT
  4. Ensure you have the latest agent. See Upgrade the agent from the Computers page.
  5. If the issue persists, submit a ticket to Trend Micro Cloud One Support.