Internet Explorer Enhanced Security Configuration places your server and Microsoft Internet Explorer in a configuration that decreases the exposure of your server to  potential attacks that can occur through Web content and aplication scripts. As a result, some Web sites may not display or perform as expected.

For Windows Server 2003 Users

The quickest way to remove it for Server 2003 is to uninstall it: Go to Control Panel, then Add or Remove Programs, then click on Add/Remove Windows Components uncheck the Internet Explorer Enhanced Security Configuration and click on next.

For Windows Server 2008 Users

In Windows Server 2008, you have to click on the root folder in server manager. Then you scroll down to the Security Information Section and click “Configure IE ESC”. You can turn off IE ESC for Administrators and/or for users. The latter in a Terminal Server environment.