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I will say that your problem is likely XAMPP. Many people have reported issue trying to run it with osTicket (I do not know what causes the issues). XAMPP is NOT a PREREQUISITE. The wiki does not mention XAMPP. Installation instructions are here:http://osticket.com/wiki/InstallationHere is a summary:1. Install Apache or IIS.1.a. make sure it works by browsing to local host. (You should see a webpage)2. Install MySQL2.a. make sure it works by running a manual query2.b. create the database that you are going to use for osTicket.2.c. create the username/password that you are going to use for osTicket.2.d. assign privleges to the user for the database that you created.3. Install PHP3.a. make sure you configure the webserver to use it.3.b. make sure PHP is working. (create a file called test.php with a contents of <?php phpinfo(); ?> and put it in your web folder. Browse to localhost/test.php and see what happens)4. Download the osticket installation archive from http://osticket.com/download4.a. open the archive and copy the contents of the upload folder into your web folder.5. browse to local host, follow the prompts.