This error indicates that the server has determined that you are not allowed access to the thing you've requested, either on purpose or due to a misconfiguration . It's probably because the site owner has limited access to it and you don't have permission to view it. The vast majority of the time, there's not much you can do to fix things on your (*client) end. There are three common causes for 403 Forbidden error (server side) . Here they are listed from most likely to least likely:
An empty website directory
No index page
Permission / Ownership error
More:
http://net-informations.com/q/mis/403.html