K-MAC

I'm using Chrome and got the 'untrusted' certificate warning (it expired yesterday) when trying to logon to Outlook (Hotmail) account. Before clicking on "Block", I clicked on the "Remember action for this certificate" radio button. Of course, now I can't logon to Outlook! (duh!) I there any way to reverse this decision (Remember Blocking)? I'd like to be able to check my email. Thanks. \km