Have a strange problem.
We have a XP SP3 computer that connects remotely to our server 2008. All of a sudden users are unable to log in. Looking at Event Viewer I am getting errors with source LSASRV ID 40961 and 40960 with messages "The Security System could not establish a secured connection with the server, No authentication protocol was available"
I have tried to remove the system from the domain and re-added it back and checked the DNS settings. I am able to see the machine as I can log in with a local account. Just network users can not.