Disabling user registration
User registrations are enabled in a default Joomla! installation. However there might be cases where you use extensions as a replacement and wish to turn off the default Joomla user management. To do this you must perform the following steps:
- disable user registration by changing the Allow User Registration field in Global Configuration to No. To learn how to do this see Changing user registration settings.
For Joomla 1.6+ you must go to User Manager from the User menu. Then click on the options box and turn the parameter for Allow User Registration to 'Off'.