1. Click the Windows Start button and select 'Control Panel.' In this window, double-click the 'Administrative Tools' icon and then double-click 'Internet Information Services.' This opens the IIS console.
2. Click the icon labeled 'Default Web Site' on the left side of the window. This loads a list of directories and files on the right side of the window.

3. Right click 'Localstart.asp' and select 'Properties.' This opens a property window. In the new window, click the 'File Security' tab.
4. Click the 'Edit' button located in the 'Anonymous access and authentication control' section of the property window. In the dialog box displayed, remove the check mark labeled 'Anonymous access.'
5. Click the 'Save' button and open the website in your browser. The website should display pages regularly, and the user should not see a 500 error.