Hi everyone,
I have some curious situation.
I did develop a site and add inside of Iframe in Joomla site.
When I open the web site and click on page to login, using IE (any version), the browser give-me 404-File or Directory not found.
But, When I open the same website on Chrome or Firefox works very fine.
The pages was created in MVC4 RAZOR, Jquery 1.8.x, HTML5