Internet Explorer Enhanced Security Configuration
By default, Windows Server 2012 protects against attacks via the browser by greatly limiting the browsers’ possibilities. This is useful for servers, however if you want to use it for normal web browsing, it is desired to turn this security feature off.
To turn this feature off, open the Server Manager, select Local Server in the left pane and click at the On link behind the IE Enhanced Configuration setting in the PROPERTIES section. Next, switch the setting to Off for both Administrators and Users to disable it for both user groups. Save the changed values by clicking OK.
Continue to set performance for Applications…