Went off on holiday and returned to find my computer was unable to access my emails. I hadn't done anything but it keeps saying wrong user name/password and I have just reset it all, checked it and still it won't let me in. I can get my emails on via web or phone. What's miscrossoft's problem.?

It is showing an error code:

Windows Live Mail Error ID: 0x800CCC92

Any one who can help please!! 

Getting so fed up!