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

The status "Anti-Malware: Driver offline / Not installed" indicates that the Deep Security Agent (DSA) cannot communicate with or find the required anti-malware kernel drivers on the host system

Check for Conflicting Software: 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. The status "Anti-Malware: Driver offline / Not installed"

1. Verify the agent service is running (dsa_control -s).
2. Check if the TmFilter or tmumh driver exists in C:\Windows\System32\drivers.
3. Re-run the agent installer with the repair option: msiexec /f INSTALLER_GUID

Sleep Mode: If a VM enters a standby or hibernate state, it may lose communication with the vShield driver, triggering the "offline" status. Verify the agent service is running ( dsa_control -s )