Hi Allen,
The purpose of NDIS is usually to allow other devices to connect to the internet through your computer. It's a feature that can be useful in various scenarios, such as when you have a single internet connection and want to share it with other devices in your local network. If you no longer need this functionality or if it's causing issues, you can remove it.
Introduction to NDIS Protocol Drivers - Windows drivers | Microsoft Learn
Regards,
Karlie