Viewing Assigned Ports

Use Windows Task Manager and the Microsoft netstat utility to determine the process that is occupying a port in a Windows installation.

Check whether the ports are being used by other programs in a Windows environment:

  1. Open Windows Task Manager, and select the Processes tab.
  2. Click View > Select Columns > . From the list, select PID (Process Identifier), and click OK.
  3. Access the command prompt (cmd), and type the following command:netstat -aon.
    The resulting list shows the PID, the IP addresses, and the ports.
  4. Compare the PID in this list against the PID in the Task Manager list to identify the process which is occupying the port.
Parent topic: Listeners or Services Could Not be Started Errors