Open your .htaccess file in your project root. Uncomment RewriteBase /drupal and change it to your project name like RewriteBase /projectname . Comment RewriteBase / Goto /admin/config/search/clean-urls There will be an option to Enable clean URLs .

Please open php.ini file and paste at bottom following code zend_extension=C:\xampp\php\ext\php_opcache.dll [opcache] opcache.enable = 1 opcache.memory_consumption = 128 opcache.max_accelerated_files = 4000 opcache.revalidate_freq = 60 ; Required for Moodle opcache.use_cwd = 1 opcache.validate_timestamps = 1 opcache.save_comments = 1 opcache.enable_file_override = 0 ; If something does not work in Moodle ;opcache.revalidate_path = 1 ; May fix problems […]

It is very simple. It is occurred when installation is interrupted. To install Drupal the database must be empty of all tables. If you face any problem just reply me.