Solve 'Error displaying the error page: Application Installation Error' Error in Joomla

 

Joomla is free open source content management system for creating blogger website or web contenting started from 2005.when you working on Joomla 3.x version than sometimes you may be change server or upload from local server to live server that time you fetch configuration problem and display error like 'Error displaying the error page: Application Installation Error'.
This type error because of database connection to server.so check your database connection first.
In Joomla database setting write on `configuration.php` file. so check that file on Joomla root folder.
In that file below match setting for database.

public $dbtype = 'mysqli'; //"mysqli" or "mysql"
public $host = 'localhost'; //server name
public $user = 'root'; //name of database user who access database
public $password = ''; //password of below database user
public $db = 'joomla'; //name of database
public $dbprefix = 'joomla_' //database prefix name 

Check below setting according to your server all value enter correct or not.(If you not sure about than you can check using `mysql_connect` function on any demo file).
All user data you enter correctly than change database type `mysqli` to `mysql` because some server not support mysql database.