After installing Mountain Lion, my Microsoft Office Suite would not open. I found this post, but don't understand it: There is actually a fix for this. Check the individual OS forums - many people had this problem with the recent security update. If you installed the security update, make sure you do an software update again.
What is 'individual OS forums' and how can I find this security update / software update so I can open my apps again? BTW: After installing Mountain Lion, I got this message when I tried to open up Word or Excel: 'power PC applications are no longer supported.' Bruce There is NO support in OSX 10.7 (Lion) and 10.8 (Mountain Lion) for old PowerPC applications. They simply will NOT work. The last version of OSX to allow you to run PowerPC applications was OSX 10.6 (Snow Leopard). OSX 10.6 included a system component called Rosetta which provided the code to allow old PowerPC applications to run on Intel processor Macs but it was dropped with 10.7 and there was / is no alternative to it.
Microsoft Office. The minimum requirement is Mac OS X 10.5.8. You can notice that it'll be mentioned as Mac OS X version 10.5.8 or a later version of Mac OS. I agree with Balaji M Kundalam, the minimum requirement of operating system is Mac OS X v10.5.8. Mac users interested in Free microsoft office for mac 10.6 generally download: LibreOffice 6.1 Free LibreOffice is a comprehensive and free suite of business applications.
You've a couple of options. Though none are ideal. Try Open Office (as that post you provided recommended) 2. Reverse the upgrade to 10.8 and go back to 10.6 (using a backup) 3. Upgrade/buy a newer version of MS Office 2008 or 2011 4.
Use a VM such as Parallels, Fusion or Virtual Box to run Windows with MS Office.