(Note : For Linux operating system, SELinux must be disabled or set to permissive mode.)
MySql Variables
sql-mode : set to not strict. (or simply comment sql-mode or sql_mode variable)
max_allowed_packet : should be 64M (Minimum).
connect_timeout : should be 300 (Minimum).
Decoders
Zend Optimizer for PHP5.2.x and Zend Guard Loader for PHP5.3.x & PHP5.4 and higher versions.
Please disable zend opcache
Tested with Web Browsers
Google Chrome
Firefox
Opera
Netscape
IE Edge (Windows 10)
IE old versions not recommended for staff portal / admin portal
Server Applications
Web Server : Any web server daemon - such as Apache, Nginx, IIS which is fully compatible with the required PHP configuration. If you have mod_security installed on your Apache web server, mod_security must be disabled or your Vision Helpdesk files white listed (exempt from all mod_security rules).
PHP : 5.3.x / 5.4.x / 5.5.x / 5.5.6
MySQL: 5.1 / 5.5 / 5.6
PHP Modules
ICONV
PHP CURL
PHP GD
Open SSL (if using IMAP or POP3 SSL to fetch emails)