سلام آقا محمد.
ببخشید دوباره نصبش کردم و داره اینو مینویسه:
we cannot sing you in to yahoo!messaenger
there might be a problem with your internet connection.make sure your computer is connected to the internet.clik troubleshoot to begin a series of tests to try to diagnose the connection problem.
حالا با این وضعیت چیکار کنم؟؟؟ ممنونم