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Users may receive warning errors, such as “Smart Protection Server Disconnected for Smart Scan” and “Smart Protection Server Disconnected for Web Reputation” in DSM. To resolve this issue, follow these troubleshooting steps:

  1. Ensure that the computer has an active internet connection.
  2. Check if security software or firewalls are blocking the connection to the Trend Micro servers. If such software is enabled, configure it to allow connections to the following domain names:
    • trendmicro.com
    • trendlabs.com
    • trendmicro.net
    • tmm.my
    • tmsts.com
  3. If the above steps do not resolve the issue, contact Trend Micro Support for further assistance.

By following these steps, users can fix the Smart Protection Server Disconnected for Smart Scan and Smart Protection Server Disconnected for Web Reputation warning errors in DSM.