I CAN’T ACCESS MY ACCOUNT – Sorry, there seems to be a problem with Outlook at the moment

I have a live.co.uk account and a live.com account, I can't access my .co.uk account but can on the .com account, and every time I access the .co.uk account this message appears "Sorry, there seems to be a problem with Outlook at the moment. But the system diagnostics say it's working fine! HELP!!!! I have an incredibly important email expected tomorrow and I NEED to get into that account!


Thanks,

Alan.