How to Check List of Open Ports in Windows 10?br br Step 1: Open Command Prompt as an Administrator.br br Step 2: Type below Command, After that, hit enter key on the keyboard.br br netstat -aonbr br Explanation of above command is below:-br br netstat Displays protocol statistics and current TCPIP network connections.br br -a: Displays all connections and listening ports.br br -o: Displays the owning process ID associated with each connection.br br -n: Displays addresses and port numbers in numerical form.br br Step 3: Now, you can see active connections, and also ports that are open on your computer.br br br It's done.