Command To Check Open Ports in Windows

In this tutorial, we are going to see how to check open ports in Windows 10 using command prompt. On a daily basis, Windows will have many applications connected or trying to connect to the Internet. With all these applications, it is natural that they use a lot of ports. Sometimes, two programs may need the same port to work. When that specific port is used by another application, it cannot use that port and the application may display a warning message or block it completely. In these situations, it is best to know which ports are being used and which application is using that specific port. That way, you can either change the port or stop the problem that is causing the application to work as it should. Now, let’s see how to find open ports used in Windows 10.
 

 

Command To Check Open Ports in Windows

Using a single command, you can get a list of all ports used by various programs. This method is very useful if you want to take a quick look at the ports used.

Step 1: There are two ways to open the command line. Click on the Start menu, type CMD in the search box, then right-click on it and select Run as administrator. Or press WIN + R, type CMD, and press Enter.
 

 

 
Step 2: In the Command Prompt window that opens, enter the following command by copying, pasting and validating with the Enter key:

netstat -ab

In the output, you will see the port number right next to the IP address (e.g. 10.10.10.10:99999).
 

 
Keep in mind that the list will not be updated automatically. You must re-run the command when you need an updated list.
 
That’s All!