Uninstalling Trend Micro Officescan
Need to uninstall Trend Micro Officescan but don’t have the administrator password? You’ll need Administrator access to your operating system, but that’s about it. Run regedit, then navigate to:
HKEY_LOCAL_MACHINE\SOFTWARE\TrendMicro\PC-cillinNTCorp\
CurrentVersion\Misc.
The value for Allow Uninstall is probably 0 – simply change to 1, exit from the registry editor and uninstall!