Activity Monitoring in Cloud One Workload Security is used to forward information to Trend Micro Vision One/XDR platform. After enabling this feature, Agent may show "MQTT Connection offline".
This article can help troubleshoot this error.
Make sure the Agents have outbound connectivity to Trend Micro Vision One/XDR. If you have a Firewall or proxy, add the following two URLs in the allow list as well as in the SSL/TLS inspection settings:
New URLs might be added in the future. You can check Cloud One Workload Security URLs for the updated list.
Verify the Agent Activity Monitoring configuration on the machine. The result should be as follows:
Feature SENSOR state= 1
Check if the Agent IoT connection is online.
- Upgrade the Agent build. There were fixes/improvements on recently released Agent builds regarding this issue for both Windows and Linux platforms. See Agent Release Notes for more details. To upgrade, refer to the Upgrade the agent from the Computers page.
If the issue persists, submit a ticket to Trend Micro Cloud One Technical Support .