If your new MVC site throws an access denied error you probably don’t have windows authentication setup.
The first thing is checking if you are hosting your site on IIS 7 or better. (Otherwise this section won’t help).
Right click on your project in Visual Studio, click Properties.
Click the web tab.
If you Use IIS Express checked THEN SKIP TO THE BOTTOM OF THIS ARTICLE.
See this post about enabling windows authentication.
(You may need to close IIS Manager and reopen it).
5. On the Authentication page, select Anonymous authentication.
Here is how to enable windows authentication on IIS Express in Visual Studio 2012.
1. Click on your project in the Solution Explorer to select the project.
2. If the Properties pane is not open, open it (F4).
3. In the Properties pane for your project:
a) Set “Anonymous Authentication” to “Disabled”.