Single Sign on login on IE 11 not working on systems recently upgraded to windows 10 1803. One of our users tried to login but was denied until he deletes all stored credentials from the previous sessions in the credential manager.
I checked the Site to Zone Assignment List to make sure the intranet site has been added properly to lists and the internet explorer settings > Automatic logon only in Intranet zone was also enabled via group policies. We realised most of these functionality were disabled by default in group policy for windows 10. That already explains why the group policies responsible for SSO weren't being applied on respective systems. Is there another way to go about this?