This suggests there may be an incompatibility with a third-party network driver. If you are using other software products like a firewall, antivirus, VPN or Internet security suite - all of these filter network traffic and thus may interfere with NetWorx.
If you want to exclude local traffic and monitor apps, you can try our new product
NetGenius. It is built upon a different technology and may work better for you. NetGenius comes as a free 30-day trial, so there should be plenty of time for you to check if you like it better.