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

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

: Perform a manual uninstallation. Go to Device Manager , enable "Show hidden devices," and under Non-Plug and Play Drivers , uninstall tmactmon , tmcomm , and tmevtmgr . Reboot the machine before attempting a fresh installation of the latest agent version. 2. Certificate and Digital Signature Issues A failed update or partial uninstall often leaves

On Linux systems, the Anti-Malware driver (VFS_Filter) may fail if the kernel is unsupported or if Secure Boot is blocking the module.

Outdated root certificates on Windows servers can prevent the system from verifying the digital signatures of Trend Micro drivers. Corrupted Installation : Perform a manual uninstallation

: 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 "," 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 sc query tmcomm

: 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)

: 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.