I have been using Office 365 on a couple of computers happily for the past few months. However, all of a sudden on my Windows 8 bare metal desk top, none of the Office applications will stay open. Outlook 2013 is the worst. It opens, downloads the latest email and crashes within a minute. Typically it restarts and then crashes again. I reinstalled Windows 8 and then Office 365 and I am still having the same issue. Separately, I run Office 365 on an Enterprise Windows 7 VM on a MAC and it isn't exhibiting any of these issues. That VM instance of Office 365 is connected to a Corp Exchange Server.

Each time I restart Outlook it downloads the latest email again - now I have 5 redundant emails for all my message - which would be a real pain except Outlook won't stay open long enough for that problem to be very relevant. 

The message I get is "Microsoft Outlook has stopped working - A problem caused the program to stop working correctly. Windows will close the program and notify you if a solution is available. Close Program."

I have disabled all the add-ins and I don't have any other applications or patches installed beyond the online installation for Windows 8. When I reinstalled Windows 8 I selected the 'Only keep user files' so in theory none of the application settings were carried over into the new install. Starting Outlook in Safe Mode doesn't make any difference.

Hagen 

There might be something wrong with your reinstalled Windows system, try either of the following methods:

1st, uninstall office use the fix it tool from http://support.microsoft.com/kb/2739501, and reinstall Office;

If that doesn't work, try the next one:

2nd, back up your personal data files from your computer to a removable hard disk, and reinstall Windows 8 use the fresh install option, and reinstall Office again;

See http://office.microsoft.com/en-us/project-help/repair-or-remove-office-2010-HA010357402.aspx.