The Administrator application, also known as the Back-end, Admin Panel or Control Panel, is the interface where administrators and other site officials with appropriate privileges can manipulate the look of a Joomla! powered web site. There are many tasks which can be done with the administrator interface. You can set up how your web site looks with the Template Manager or completely change a web site's look by changing the template to another template. You can also add new extensions such as components, languages, modules, and plugins. Many of these are found on the Joomla! Extension Directory (JED).
This page explains how to log into and out of the Joomla! administrator (commonly called Back-End) interface of a Joomla! powered website. You can only log in to the Administrator interface if you have administration or back-end privileges.
The Administrator interface (application) can be reached by appending the word
administrator to the URL of your site. For example, if you usally access your web site on:
http://www.example.com/administratorto access the Administrator panel
Logging out will return you to the Administrator login screen. If the Logout link is greyed out and nothing happens when you click on it, then you are probably in a screen where you have some resource locked for your exclusive use. Click the Cancel toolbar button first to release the resource, then click on the Logout link.