While starting the central or probe server, after installation, if it shows "WebServerPort Already Occupied" or "Port Occupied" message then do as given below.
Solution:
In the command prompt you can type "netstat -an"
and look for the port given by you when the central/probe server is
installed. See which service is occupying it and stop that service.
Go to C:\Program Files\AdventNet\Me\Central\bin directory in command prompt and execute "ChangeWebServerPort.bat <oldPort> <newPort>".
[or]
Change the web server port number in the ports.properties file. Click here to know the procedure to change the port number.