How to reset/remove TrendMicro OfficeScan uninstall password
Edit Ofcscan.ini file.
**On Windows.95/98 machines it is usually in C:\Windows\Ofcscan.ini
**On Windows.NT/2K machines it is usually in C:\WINNT\Ofcscan.ini (May also be in C:\Program Files\…)
1) Open the Ofcscan.ini file using notepad search for the [INI_CLIENT_SECTION]
2) Find the line reading Uninstall_Pwd= and type a # at the beginning of the line to comment it out.
3) Insert a new line saying Uninstall_Pwd=70
4) Save the Ofcscan.ini file and retry the uninstall. When it prompts you for a password, enter a ‘1‘.

