If the port is already occupied (as in the screenshot), prompt as in below screenshot will appear.
Find application that uses the port by following the steps below,
Execute, netstat -oan (This command will display list of processes and the ports used by them)
Find the Process ID from either Task Manager / using the command TASKSLIST
Stop the other application / set ServiceDesk Plus to use another port using the ChangeWebServerport.bat
If the application is running on HTTPs, backup server.xml
found under C:\Manageengine\ServiceDesk\server\default\deploy\jbossweb-tomcat70.sar\server.xml
The Keystore name and password for the keystore will be on the server.xml. It is required to re-update when the settings are reset upon executing ChangeWebServerPort.bat.