Trend Micro Deep Security Anti-malware Driver Offline Not Installed Jun 2026

Verify that the following directories were completely removed (delete them manually if they remain): C:\Program Files\Trend Micro\Deep Security Agent\ C:\ProgramData\Trend Micro\Deep Security Agent\

: Run the following commands in an Administrative Command Prompt to check driver health: sc query AMSP sc query tmcomm sc query tmactmon sc query tmevtmgr

: Open a command prompt as an administrator and run sc query AMSP (and tmcomm , tmactmon , tmevtmgr for versions 12.5 or older) to see if they are active.

On Linux or newer Windows servers, if Secure Boot is enabled and the Trend Micro public key isn't enrolled, the driver will be blocked. Press Win + R , type msinfo32 , and press Enter

Windows strict driver signing policy can block Trend Micro drivers if Secure Boot is active and the certificates are not updated. Press Win + R , type msinfo32 , and press Enter. Look for .

: Ensure no other antivirus products (like OfficeScan or Apex One ) are running, as they can block driver installation. How to Resolve the Issue

If any of these are stopped, try restarting the service. 2. Resolving Secure Boot Conflicts How to Resolve the Issue If any of

Look closely at the Anti-Malware: row in the output to see if it reads Driver Offline or Not Installed . How to Fix the Error on Windows Hosts Solution 1: Perform a Clean Reboot

Existing antivirus programs like Trend Micro OfficeScan or third-party AVs can block the DSA driver installation.

A recent Linux kernel update or Windows Quality Update is not yet supported by your current Deep Security Agent (DSA) version. deep-dive strategy to diagnose

is a cornerstone of enterprise server defense, but encountering the "Anti-Malware Driver Offline" or "Not Installed" error can abruptly leave your critical workloads vulnerable . This comprehensive guide provides system administrators with an actionable, deep-dive strategy to diagnose, troubleshoot, and permanently resolve this common endpoint issue across both Windows and Linux environments. Understanding the Root Causes

A recent operating system or kernel update is blocking the Trend Micro driver.