You may be trying to access this site from a secured browser on the server. Please enable scripts and reload this page

In this post we will discuss about how to resolve sharepoint error: You may be trying to access this site from a secured browser on the server. Please enable scripts and reload this page

Also you can check out my previous posts on:

- New for visual webpart for SharePoint 2013 and Visual Studio 2012

- Check if list exists or not using TryGetList method in SharePoint 2010

- Add script reference dynamically through code in SharePoint

I got the above error in the below System configuration:
Windows server 2008 R2
Visual Studio 2010
SharePoint 2010

Start -> Administrative Tools ->Server Manager ->in the right hand side Configure IE ESC ->Select Off for Administrators and click OK.

URL Reference: http://social.technet.microsoft.com/Forums/en/winservergen/thread/e87585de-d365-48c8-b08f-1050d68724ed

Hope it will work for you.