Trend Micro OfficeScan Uninstallation

If you, like me, have ever been faced with having to uninstall Trend OfficeScan, only for it to ask for a long-lost password, you were pretty much out of luck.  Trend does have a KB article with manual un-installation steps, but that is an exercise in frustration.

Fortunately I recently happened across a "hidden" command that will take care of business.  You need to do the following:

1. Open a command prompt and navigate to the folder where your Trend AV client is installed, usually c:\Program Files\Trend Micro\*****
2. Execute the following command: NTRMV.exe -331

This takes care of all the nitty-gritty stuff, stopping the services, removing files and folders and removing all the relevant bits from the registry.

Another great thing about this approach is that it's much easier to script and / or deploy with your favourite management app.