close a port and make it available windows code example
Example 1: remove port binding windows
netstat -a -n -o | findstr :80
TaskKill /PID pidnum
Example 2: stop kill network connection using cmd line
FOR /F "tokens=4 delims= " %%P IN ('netstat -a -n -o ^| findstr :8080') DO TaskKill.exe /PID %%P