FAQ Network Traffic Monitor

When I start filtering I get an error message. Why?

Network Traffic Monitor makes use of the Filter-Hook Driver technology that is part of Windows XP. Unfortunately Windows XP allows only a single filter-hook driver to be installed, so if you run another software application that makes use of this technology, starting Network Traffic Monitor's filtering will fail. If you want to use Network Traffic Monitor you will first have to stop that other application.
Known applications to use the same Filter-Hook Driver technology: PeerGuardian, Outpost Firewall Pro.
Some users reported that starting Network Traffic Monitor before the other application solved the problem.