I have been experiencing unusual message, just out of nowhere, which appears that your account has expired, when I (user) logged in the active directory. After that I works fine. Currently I dont have a solution. What I do is to restart the computer and I login again for two, three times and managed to login. I dont have a user who has totally failed to login. But a technical solution is still at large. But since we can share ideas among ourselves, may I present this to your attention and please assist if you have any idea of this problem and provide a solution as a forum.