Problem when I am using the Chernclient.

Hello
I faced with a problem when I am using the Chernclient.
I’m trying to fix it for the last 4 hours but nothing has change on it. I’m seeing this error which shows a few seconds after l launched chernclient.exe.

We were unable to connect to the server. Please make sure you have a stable internet connection. The server might be experiencing some problems, do you wish to start the client anyway?
Thanks for any help you can give guys.
