Using the following procedure you can install windows authentication in IIS 7 and Windows Server 2008 and later. You then can turn on Windows authentication for any web applications that require it. In fact, you can install any role service using the following model but this procedure is specific for adding Windows authentication to an existing IIS installation.
Note: You must have the Web Server (IIS) role already installed for this procedure to work. Check out http://www.iis.net/learn/install/installing-iis-7/installing-iis-7-and-above-on-windows-server-2008-or-windows-server-2008-r2 if you need instructions to install this role.
- Log on to the server hosting the application.
- Open Server Manager.
- Select Roles.
- Add Role Services to the Web Server (IIS) role.
- In the Select Roles Services step, select Windows Authentication under the Security node.
- Complete the wizard steps and install the new role service.
- Go back to IIS and ensure that Windows authentication is available. You can then enable it for any IIS web sites that need it.