How to enable authentication modes for IIS
Sometimes you want different authentication modes with your ASP.NET website. Normally, you can enable and disable a number of authentication modes in IIS under the Authentication section for your website, but there may be a scenario where a couple of these authentication modes are missing.
To resolve this problem, you have to enable these under Windows Features:
- Go to Control Panel->Programs and Features, choose Turn Windows Features on or off.
- Navigate to Internet Information Services->World Wide Web Services->Security and tick the desired authentication modes: