Accessing Hotmail account from my nokia phone

I have always been able to view my email account on my nokia 300 phone until recently and every time i make an attept it lets me log in then gives me the error message could not display mailbox. Try again - this has been hapening for a couple of weeks now and even when i use the pc to access my account i am having various difficulties opening the folders. i have reset the password and attempted to ensure phone is linked to the account but am not getting anywhere on either pc or phone can anyone help as mail is building up and i can't do anything about it.  Seriously frustrated now !!!!!!!