I set up an Extranet site to share certain documents with a group of people who are all on the same domain as each other. Users are first added to AD as guest users, then invited to the site. This has worked perfectly for 9 out of 10 people but there is one person who has NOT been able to access the site at all.
I have removed and re-added the user several times. The IT department for the user in question has confirmed the proxy is working (as evidenced by the other users who are not having any issues), and the profile and laptop set up have been check by them also. What could possibly be the issue? It has to be something super simple that is just staring me in the face, but I'm not seeing it. Any suggestions would be appreciated.