I have a server 2008 r2 install and its sole reason of existence is to run several different remote apps. The clients range from PC's to apple and android tablets. Everything was working then last Thursday it stopped servicing requests to remote clients. Clients inside (on its same network and domain) can still access and run applications with no errors at all. But all non domain workstations it give the error shown below.
Users will in a browser navigate to the terminal services site mycompany.info/ts it will then ask for their domain info...they enter it and it will bring them to the Windows Server 2008 TS Web Access screen. Sometimes they see the icons sometimes they do not. If they click on the icon or the word it will start to load then give the error.
Really stuck, no real tell tale errors in the event viewer except for a warning about the User profile service....don't think that is related, and an error about winlogon don't think it is related.