I have been working with a SharePoint Foundation 2013 server in an internet-facing environment, successfully so far.
Suddenly, when a user browses to the server (say http://abc.dedicated.com), after the prompt for user credentials, the page initially loads the start page (http://abc.dedicated.com/_layouts/15/start.aspx#/SitePages/Home.aspx, and then tries to load http://abc.dedicated.com/SitePages/Home.aspx instead, and gives an "403 FORBIDDEN" message.
I understand the forbidden part if the url is changed, but i don't understand why that would be happening. If I type in the full url (including the _layouts part, this still happens.
I have done a bit of AAM editing, extending the web application to an intranet zone with the (logical) urlhttp://abc/ but my access was working successfully. My most recent changes were to play around with a couple of External Content Types and external lists.
The user account I am working with is a Site Collection Admin.
What could have changed (or what could I have changed) to make something like this happen?
