So this was my first encounter with SharePoint 2013. Everything looked cool and entirely different, started from Windows Server 2012 to SharePoint 2013. So after understanding a bit of functionality of Windows Server 2012 and read some stuff of SharePoint 2013, I decided to do some POC on SharePoint 2013. Started with creating a publishing site. Site creation was smooth and everything went fine till I start browsing the newly created site. On browsing, site asked me to provide credentials. After entering correct credentials a couple of times, site kept rejected me from log-in.
After digging the problem, I came to know that you can’t access a site that uses FQDN/Host Header Entry and have integrated authentication mode until you add host header/FQDN entry in registry.
So this was the problem with IIS not with SharePoint 2013. But how it is associated with SharePoint 2013?
Actually in SharePoint 2010 we had 2 different types of authentication providers.
- Classic based
- Claims based
Claims based is considered as integrated authentication (As this support both windows based and Forms based authentications). In 2013, there is no choice to choose between above mentioned providers. Your site automatically created using Claims based authentication as this is mandatory now and no choice is provided on UI. Apart from this while creating site I mentioned the host header entry to access site by a user friendly name.
So problem arises like Host Header/FQDN+ Integrated authentication.
To resolve this issue, Microsoft provides a KB article. Have a look on below link to resolve the issue.