Symptoms

Attempting to reconfigure K2 to use default ports "5555" and "5252" but seeing warning:

"Port 5555 cannot be used because it is already in use."
 

Diagnoses

Command Prompt:

1. Use netstat to find PID using port 5555

netstat -o -n -a | findstr "5555"

2. Use tasklist to find what PID belongs to:

tasklist | findstr " PIDfromNetstatResult]"
 

Resolution

A third party backup service was using port 5555. Third party software was uninstalled will re-install it with a different port. K2 was configured to use default port 5555.