Deep Security Anti-malware Driver Offline Not Installed: Trend Micro

When the Trend Micro Deep Security Notifier displays "," 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

Outdated root certificates on Windows servers can prevent the system from verifying the digital signatures of Trend Micro drivers.

: Open the Windows Services console and ensure the Trend Micro Deep Security Agent and Trend Micro Solution Platform (AMSP) services are running. When the Trend Micro Deep Security Notifier displays

A failed update or partial uninstall often leaves behind registry keys that block new drivers from installing.

: Ensure you used the .msi installer rather than extracting files from a .zip package, as the latter can lead to incomplete driver registration. Root Causes and Solutions 1. Corrupted Installation : Open the Windows Services console and ensure

Before performing a full reinstallation, try these quick fixes:

: Check your kernel version against the Trend Micro Support Matrix . If Secure Boot is enabled, you must enroll the Trend Micro public key to allow the driver to load. 4. Agentless Protection (VMware Environments) Root Causes and Solutions 1

: Open a command prompt as an administrator and run sc query AMSP , sc query tmcomm , sc query tmactmon , and sc query tmevtmgr . If any are stopped, attempt to start them manually.