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Determining what process is using a port

Some component of Power Monitoring Expert such as an Engineering Client or the Diagnostics Viewer does not work.

Product Line
Power Monitoring Expert (PME) 7.2.x
Any software or hardware using a port.

Application Troubleshooting

Power Monitoring Expert (PME) and older editions use ports for communication.  Sometimes the ports are used by other applications, resulting in communication issues within some components of PME.

This article introduces a tool that could be used to find out what process (application) is using the desired port.

Sysinternals Live is a service that enables executing Sysinternals tools directly from the Web without hunting for and manually downloading them.  The entire tools directory can be viewed from:
The tool of importance in determining which port is utilized by which process is TCPView:

Menu Options > Resolve Addresses, allows viewing domain and server name instead of IP address:

How to Use TCPView
  1. Determine the port for the component not functioning.
  2. From TCPView find the PID (process ID) associated with the port.
  3. Decide whether to kill the port (Task Manager) or take other measures.

To determine the default ports used by a program, it is necessary to refer to its corresponding documentation.  Here is two examples:
  • Power Monitoring Expert: Installation Guide
  • PowerLogic Scada Expert: System Integrator's Manual
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