1. Change website configurationGo to System > Configuration > Web > Search Engine Optimization. Change ‘Use Web Server Rewrites’ to YES and save.
2. Edit the .htaccess file

If your Magento store is installed in root (public_html) then add this to the end of the .htaccess file:

RewriteEngine On
RewriteBase /
RewriteRule ^index.php$ - [L] RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule . /index.php [L]

If your Magento store is installed in a subfolder (public_html/store) then add this to the end of the .htaccess file:

RewriteEngine On
RewriteBase /store/
RewriteRule ^index.php$ - [L] RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule . /store/index.php [L]