IIS provides a variety of authentication schemes:
- Anonymous
- Basic
- Digest
- Integrated Windows authentication
- Client Certificate Mapping
Details could be found here as Reference:
http://msdn.microsoft.com/en-us/library/aa292114(v=vs.71).aspx
There are often problems where you want to set up a quick access for verification, but failed. Here is one sample of troubleshooting.
401 – Unauthorized: Access is denied due to invalid credentials
1.) Open iis and select the website that is causing the 401
2.) Open the “Authentication” property under the “IIS” header
- Anonymous: Enable after double click Authentication
- Windows Authentication: Click on “Providers” move actual one like “NTLM” to the top most spot
Lily 