The or "Not Installed" status indicates that the Deep Security Agent (DSA) cannot communicate with its kernel-level or user-mode interception drivers. Without these drivers, the agent cannot intercept file system activities to scan for malicious behavior. Primary Causes
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The core cryptographic drivers did not register during setup. The or "Not Installed" status indicates that the
: Open the Windows Services console and ensure the Trend Micro Deep Security Agent and Trend Micro Solution Platform (AMSP) services are running.
Run the following command to completely uninstall the agent: msiexec /x Product-Code-GUID /qn Use code with caution. : Open the Windows Services console and ensure
The “offline” state is not a single failure but a symptom with several potential root causes, categorized below.
Before diving into fixes, it helps to understand why this error happens: Before diving into fixes, it helps to understand
The "Anti-Malware Driver offline / Not installed" error is fixable. Start with a standard reinstallation, then proceed to a manual cleanup if needed. Always consider your specific environment—addressing driver signature issues on Windows, kernel support on Linux, and Guest Introspection in VMware. When all else fails, reach out to Trend Micro Support with a diagnostic package to get expert assistance.
A recent agent upgrade or a Microsoft patch requires a restart to swap out active kernel binaries.
Ensure no other antivirus software is installed. Use the specific vendor's removal tool (e.g., McAfee, Symantec, or Sophos removal tools) to completely uninstall competing products. Reboot the machine.