Trend Micro Deep - Security Anti-malware Driver Offline Not Installed 2021

Modern Windows Server 2019/2022 and Linux distributions with UEFI Secure Boot may block unsigned or improperly signed kernel drivers. If Trend Micro’s certificate is not trusted, the driver stays offline.

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

If you are currently troubleshooting this issue, let me know:

: Use the DSM Alerting profiles to automatically upgrade agents to the latest patch level during scheduled maintenance windows. Modern Windows Server 2019/2022 and Linux distributions with

Address driver signature issues (Windows)

: The current Linux kernel or Windows build is not yet supported by the installed DSA version.

Ensure the server has the latest Microsoft root certificate updates so it can trust Trend Micro’s signed drivers. How to Fix the Error on Windows Hosts

Follow these steps in order to diagnose and resolve the driver offline issue across Windows and Linux environments. 1. Execute a Basic Verification and Reboot

On Linux systems, ensuring the agent matches the kernel version is vital. Use uname -r to check the kernel and ensure the agent installation supports it. How to Prevent Future Driver Issues

Anti-Malware: Driver offline / Not installed - Deep Security Follow these steps in order to diagnose and

Did this error happen right after an or an OS update ?

A recent agent upgrade or a Microsoft patch requires a restart to swap out active kernel binaries.

After troubleshooting, verify the DSA is online and functional.