Tip 9 : Windows Authentication Is Missing in IIS 7.0

I deployed my silverlight 3.0 application to IIS 7.0 on Windows Server 2008 and could not find Windows Authentications. It is an intranet application and only corporate windows domain users are allowed to access the application, thus windows authentication needs be used.

I got the issue solved by using the steps in the following blog:

http://weblogs.asp.net/zroiy/archive/2008/08/17/missing-windows-authentication-provider-for-iis-7-on-windows-server-2008.aspx