This procedure work as of June 5th 2010

The problem:

When trying to uninstall TrendMico Office Scan you are prompted for a password.


  • Start -> run and type MSCONFIG
  • Under services and uncheck TrendMicro Unauthorized Change Prevention Service
  • Restart the computer
  • Start -> run type Regedit
  • Navigate to HKEY_LOCAL_MACHINE\SOFTWARE\TrendMicro\PC-cillinNTCorp\CurrentVersion\Misc
  • Changing the AllowUninstall value to 1