Trend Micro Deep Security Anti-malware Driver Offline Not Installed ((install))

When the Trend Micro Deep Security Notifier displays "Driver offline / Not installed," it typically signals a corrupted installation or a critical driver failing to load on the endpoint. This error prevents the Anti-Malware module from protecting the system, even if the main Deep Security Agent (DSA) appears active in the management console. Immediate Troubleshooting Steps

Manual Reinstall: A standard uninstall often isn't enough if drivers are stuck. Manually uninstall the agent and reboot.

Why is the Anti-Malware Driver Not Installed? When the Trend Micro Deep Security Notifier displays

Look for the Anti-Malware state. If it is disabled or shows an error code, attempt to force a re-activation via the command line:

Step 2 – Transfer to offline system

Copy the entire agent installation directory and driver store to the offline machine (via USB, DVD, etc.). Review: Trend Micro Deep Security — “Anti-malware driver

If the engine remains offline after reinstallation, you may need to manually point the OS to the filter driver. Navigate to the network adapter properties.

Test Connection: In the DSM, go to Computers, right-click your vCenter, and select Properties > Test Connection. go to Computers

• Schedule kernel/agent upgrades in maintenance windows with rollback plans if anti-malware becomes non-functional.

Review: Trend Micro Deep Security — “Anti-malware driver offline / not installed” issue

Summary