Windows XP
  1. Download the Trend Micro Diagnostic Toolkit.
  2. Click Run when the File Download window appears. The Trend Micro Diagnostic Toolkit window appears after the download finishes.
  3. Click the Uninstall tab, then click 1. Uninstall software. The Toolkit will automatically detect the Trend Micro program that is currently installed.
  4. Click Uninstall. After the program finishes uninstalling, you will then be asked to restart your computer.
  5. Click Yes

Windows Vista or Windows 7 Learn more.