Check which port is occupied

How to check which port isProgramOccupied?

 

Sometimes an application cannot be opened, prompting that the port is occupied. How can I check who is occupying this port?

In: Start-run-Enter cmd, and enter netstat-ano and press Enter.

At this time, there is a PID in the last row, check which PID occupies 80, and write it down.

Next, open the task manager, which generally does not contain a PID, but we can display it;

Select "View"> "Select column" in "Task Manager"> select PID. After the PID is selected, the application corresponding to the PID can be found in the process.