Installing, Upgrading, and Migrating QAD QXtend > Installing, Upgrading, and Migrating QAD QXtend in a GUI Environment > Prerequisites
  
Prerequisites
Before installing, upgrading, or migrating QAD QXtend, do the following:
1 QAD recommends that you shut down any virus protection programs.
2 Verify that Tomcat is running.
3 Verify that you have the appropriate folder permissions to perform the install, upgrade, or migration.
4 To use the GUI installer from an X-Windows session in a Linux or UNIX environment, set the DISPLAY variable using the syntax:
export DISPLAY=HOST_NAME:0.0
For example,
export DISPLAY=plli13:0.0
5 If you are installing QXtend from QAD physical product media, go to Start the Installer.
Otherwise, download the ISO file from the QAD Download Center or QAD Store, unzip it using the appropriate utility (see Unzip Utilities), and go to Start the Installer.