With the coming of new SharePoint 2013 you have to the option of using the Claims Based Authentication or the classic Windows but you might be wondering how do you change that setting. Well you need to do it in SharePoint 2013 Management Shell and here is how its done.
To check the authentication provider you are using you have to go to SharePoint 2013 Central Administration -> Application Management -> Manage Web Applications. Highlight your the SharePoint instance you want to check then click Authentication Providers.
It will pop up a window which states your current Authentication Provider.
To change that you need to create a PowerShell script below
$Enabled=$args $SetClaimsBasedAuth = Get-SPWebApplication "http://YourSharepointServer" $SetClaimsBasedAuth.UseClaimsAuthentication = $Enabled; $SetClaimsBasedAuth.Update()
Save it in your drive as ChangeAuthentication.ps1 then run them like such
PS C:> ./ChangeAuthentication.ps1 0
Just change 0 or 1 parameter, 0 to use Windows and 1 to use Claims Based
Now you just toggled the Authentication Provider