Installation and Upgrade > Installation and Configuration Guide > Using the PTC Solution Installer > Installing Windchill Solutions > Launching the PTC Solution Installer > Entering Your LDAP Settings > Starting the Windchill Directory Server
  
Starting the Windchill Directory Server
On both Windows and UNIX systems you will need to start the Windchill Directory Server every time you reboot the machine. For more information see Starting the Windchill Directory Server.