Windows :: Kill a Process Id by looking up the port
Find PID of process that use a port on Windows (e.g. port:"8080")
Fire the below comands via Command Line Interface
netstat -a -o -n | findstr 0.0:8080
-a Displays all connections and listening ports.
-o Displays the owning process ID associated with each connection.
-n Displays addresses and port numbers in numerical form.
TCP 0.0.0.0:8080 0.0.0.0:0 LISTENING 6800
Then Kill the process by PID
taskkill /F /PID 6800
/F - Specifies to forcefully terminate the process(es).