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

Subject: Troubleshooting Guide: Trend Micro Deep Security Anti-Malware Driver Offline/Not Installed

Conflict Check: Remove any old OfficeScan/Apex One clients or third-party AV agents before installing Deep Security. Whether you are using agent-based or agentless protection,

Update kernel-compatible driver or rollback kernel For production environments

Software Conflicts: Pre-existing antivirus software like Trend Micro OfficeScan, Apex One, or third-party products often block the Deep Security driver. kernel signature enforcement

Seeing the "Anti-Malware Driver Offline" or "Not Installed" alert in your Deep Security Manager (DSM) console typically means the agent cannot verify the working status of the Anti-Malware module. Whether you are using agent-based or agentless protection, here is how to resolve the issue. 1. Identify the Root Cause Before diving into fixes, check for these common culprits:

7. Conclusion

The “Trend Micro Deep Security Anti-Malware driver offline or not installed” state is a critical failure that disables file-based threat protection. It stems from missing files, registration errors, kernel signature enforcement, or software conflicts. Resolution requires systematic verification of driver presence, service registration, filter attachment, and event logs – often culminating in a feature reinstallation or full agent rebuild. For production environments, immediate remediation is essential to close the window of vulnerability.