Error during the Manage Server Configuration Wizard process: "The process launcher port is used by another application. You must specify a different port."

Products

• Endpoint Protection

Issue/Introduction

While running the Management Server Configuration Wizard (MSCW), an error message is presented saying "The process launcher port is used by another application. You must specify a different port". 

Note: The SEPM service specified in this message may be different, however, the solution will be the same.

Environment

Symantec Endpoint Protection Manager: Versions 14.3 and higher

Cause

It is not uncommon for an application to connect to a currently unused port resulting in a block when trying to assign a second service to the same port. This can happen when the SEPM services have been stopped during an upgrade.

Resolution

Open a cmd prompt and type this command: netstat -ano | findstr [port number]. This command displays the process and PID (Process ID), listening on the specific port number you entered in the command. Note the PID in the display:

Example using specified port number 8447:

Next, type this command from the cmd prompt using the PID result from the first command: tasklist | findstr [PID]. 

Example using PID 2388:

Temporarily stop that application to free up the port, then continue completing the Management Server Configuration Wizard, then restart the application.