Joomla 1.5 Prevent/Disable New User Registration November 4, 2011 | By Duchateaux. Log-in into the Back-end Site > Global Configuration > System Check No under “Allow User Registration” Tags: Blog, Joomla « Joomla 1.5 How to Change the Adminstrator Password Git Continue to Track Or Not Ignore the Files in .gitignore » Tutorial for Linux Step-by-step GNU/Linux Tutorials for Beginners