Solve The mcrypt extension is missing Please check your PHP configuration Phpmyadmin Error in Ubuntu 13 10 Ive done installation phpmyadmin on Ubuntu 13.10 with apache web server. I restarted apache2 and after login to phpmyadmin, on the bottom of the page show this error: " The mcrypt extension is missing. Please check your PHP configuration. " like screenshot below: So, how to fix this problem? Its bug is missing mcrypt.ini , where the file located in /etc/php5/conf.d/ , which should be in /etc/php5/mods-available/ . So we should move mcrypt.ini into /etc/php5/mods-available/ with the following commands below: Run the Terminal, and switch to superuser / root by type: sudo su Then move mcrypt.ini file into /etc/php5/mods-available/ | mv -i /etc/php5/conf.d/mcrypt.ini /etc/php5/mods-available/ Then type this command: php5enmod mcrypt Then restart apache2: service apache2 restart So, you will not find error on the bottom of the phpmyadmin page. download file now