The Windows operating system uses a host name called "localhost" to navigate to a Web server service located on the local desktop. Localhost is commonly used by developers to test web applications before promoting the applications to a live server. You must install Internet Information Services (IIS) to enable the localhost option in a web browser. The IIS installation automatically enables the local machine. Step 1 Click the Windows Start button and select "Control Panel." A window will open with a list of system options and utilities. Step 2 Click on the "Programs" link. In the list of options, click "Turn Windows features on or off." A list of currently installed programs will appear on the screen. Step 3 Check the "Internet Information Services" box. Click "OK". The IIS service is installed on the computer. Step 4 Restart the computer. After the computer restarts, open a web browser. Type "http: // localhost /" in the navigation text box. Hit the "Enter" key. The default web page will open for IIS.