Disables updating the WordPress Core plus plugin and theme installation, updating and removal for all users except the administrator user with ID 1.

What users will be able to upgrade core, theme and plugin modifications?

The administrator created at WordPress installation (administrator with id 1) will be the only user that is able to do Core, plugin and theme installation, updating and removal.

1.1.2

• Added WordPress 3.5.1 support.
• Small meta information changes.

1.1.1

• Added WordPress 3.5 support.
• Small meta information changes.

1.1.0

• Fixed hiding plugin activation link bug.
• Added a method that prevents users from trying to activate/deactivate plugins through direct URL entry.

1. Upload admin-restriction to the /wp-content/plugins/ directory
2. Activate the plugin through the 'Plugins' menu in WordPress