Error 0x800ccc0d when sending and receiving mails in Outlook Express

Hi Experts,
My Outlook Express has encountered a problem. I have failed to check my email there. I have received an error message in this regard. It says, "Error: 0x800ccc0d". I found several sites to get a remedy of this issue, but failed. If you have any idea to solve the problem, please help.
Thanks in advance.
