Make Tech Easier published a tutorial about how to check for ports in use in Windows 10.
How to Check for Ports in Use in Windows 10
At any one time, there’s a whole bunch of information being sent between your Windows 10 PC and the endless void of the Internet. This is done using a process whereby network-dependent processes seek out TCP and UDP ports, which they use to communicate with the Internet. First, your data gets sent to remote ports at the destination or website your processes are trying to connect to, then it gets received at local ports back on your PC.
How to Check for Ports in Use in Windows 10
