Assume ServiceDesk Plus server's IP address is "101.102.103.104"
Step 1: Download the attached urlrewrite.xml file.
Step 2: Save the file under ..\ManagEngine\ServiceDesk\webapps\ROOT\WEB-INF directory.
Step 3: Open the urlrewrite.xml file and replace the "101.102.103.104" IP address with the ServiceDesk application installed server's IP address. Also, do not remove the special chars added back and forth of the IP address.