How to enable clean URLs in Drupal when your site is hosted on shared server

To enable clean URLs in your Drupal site, visit admin/settings/clean-urls and check weather your server support this functionality or not.

If you are using Drupal in a sub directory or in a Virtual Document Root and the rewrite rules are not working properly. go to your root folder of your drupal installation and edit the .htaccess file and uncomment the line 103
 For example if your site is at http://yoursite.com/test uncomment and modify the line number 103
  RewriteBase /test (Remove hash and add your directory)
  If your site is running in a Virtual Document Root at http://yoursite.com/, you have to  uncomment the line number 107
  RewriteBase / (Remove hash)

Now upload the edited .htaccess file and refresh the page, now you can enable the clean URLs, do clear all cache after enabling the clean URLs.