I am new to drupal and I have completed the installation process for commerce kickstart in my Ubuntu system. The thing is that when I am trying to access the admin page i get an error "403 access denied". I am using the predefined Username and password which is admin admin. I am using PHP 5.3.6. Can anyone help please?
Just to be a bit more clear, after the installation you will need to log in to the system. The login page is available at yoursiteurl/user or if you don't have the Clean URLs turned on, it will be on yoursiteurl/?q=user/login
If you don't have Clean URLs turned on, also admin pages will have to be accessed differently, ie. yoursiteurl/?q=admin
More about turning on Clean URLs in Drupal