If I could give this product 0 stars I would, closely followed by a minus score for Microsoft support! It is extremely unstable and Outlook has now twice deleted my emails accounts and all the data they held - provoked only by a restart on my Mac. When backed into a corner, Microsoft will stutter about the issues and maintain that these will be eradicated by the release of 2015 in a few months time - a great help to me and to anyone suffering the same issues now! I suspect it may take them until 2015 to get it right - if they ever do!
It also conflicts with my brand new (just released) MacBook Air, the operating system it was designed to be compatible with. I have had to uninstall this Microsoft programme from the Mac altogether and it is now flying!
I cannot vouch for MS Word and Excel, they may be OK with a Mac and I may have to use them but Outlook, at least, will never see my Mac again!
In the course of all my issues I have had the occasion to deal with both Apple and Microsoft support operations and the difference between the two is quite staggering. Apple really care that their customers are happy and love their products and nothing is too much trouble whereas Microsoft are arrogant, could give a damn and do their best to wriggle out of everything. I will leave the reader to decide who they would prefer to deal with!