Checking which application is using a port in Windows

How to check if a port is opening or not or which application is using it.

Firstly, open Command Prompt by pressing Windows + R then type cmd then hit Enter

Step 1: Checking which port is opening and see what is it’s PID

netstat -aon

or if you know the port already

netstat -aon | findstr 3306

Step 2: Checking which application is that PID

In my case, i want to check which application is using port 3306 and it has PID: 5724

tasklist | findstr 5724

That’s it, mysql is using port 3306

P/S: Kill process by PID

taskkill /PID 5724 /f