I have Yahoo Mail Plus imported into Office for Mac Outlook 2011. Everything has worked fine for 6 years until a few days ago. I received a [SYS/TEMP] problem retrieving message error popup when trying to Send/Receive new email messages. When clicking on that error message, it reads 'error code: -16999.' No email is able to be sent or received.

Any ideas on what I can do to get it working again? Thank you in advance!
I have Office for Mac Home and Student and want to upgrade to having Outlook. I've tried upgrading via my software but get a message that my product key is invalid. Neither can I find any links on the microsoft site. Does it make any difference that I'm in Australia?
I have a business computer (MS Office Outlook on Exchange Server) to my personal Mac (Use Office for Mac Outlook 2011).  My company won't let me connect my exchange address to my Mac, so I end up carrying around two computers - even though I can access it (my work email) on-line.  

I would like to move all of my emails from my exchange server to my personal computer...How do I do this?