SharePoint 2013 - Can't access the site externally in Internet Explorer ("Page cannot be displayed")
Synopsis Before we start talking about the problem let's understand the setup here. We have a SharePoint 2013 intranet site that is also configured for access outside of the corporate network. Employees use the same URL to visit the site both internally and externally via standard ports (80 and 443). Internal URL: http://sharepoint.domain.com Public URL: https://sharepoint.domain.com The site URL has been added to the Local Intranet zone in Internet Explorer for passing domain credentials. Alternate Access Mappings have been configured in such a way that if a user requests the site over HTTP they are automatically re-directed to HTTPS. Internal URL Zone Public URL for Zone https://sharepoint.domain.com Default https://sharepoint.domain.com http://sharepoint.domain.com Default https://sharepoint.domain.com Web application has been configured to use Kerberos protocol for authenticating incoming c