i cannot get online…just happened…get message asking to if i want to go online over and over again and then an error message (no number) stating updating calendar failed: HELP!!!

have been using windows live mail for over a year. it just stopped last night. now it states working offline and won't let me check the online box.  the error message says that the calendar update failed but i did nothing with it. i did the uninstall windows essentials and clicked on the repair all windows programs and restarted the computer...didn't work. HELP!!