Installation and Upgrade > Installation and Configuration Guide > Using the PTC Solution Installer > Installing Windchill Solutions > Launching the PTC Solution Installer > Specifying the User (UNIX Only)
  
Specifying the User (UNIX Only)
When installing as a root user, you can choose which user under which to install the software components.
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This screen will not appear if you are installing HTTP Server, because HTTP Server requires a root user to install.