I am having the same problem, but I have found an unsatisfactory
work-around. After a couple of times trying to start Outlook, and
seeing nothing happen, I checked the Task Manager. There I found that
there were several instances of Outlook.exe running (not in
applications, but only in process tab). I then stopped all the
processes and started Outlook again, and it started normally.
Unless I am starting Outlook after a reboot, I now simply start
Outlook and then go to the Task Manager and see two processes, and
then stop one. Here I learned something else... if you stop the right
one Outlook pops right up and runs normally. If you choose the wrong
one you get the message that Outlook should start in Safe Mode. What
I have discovered is that you need to stop the instance which is
using the larger amount of memory to get the "fresh" instance to
start.
OK - I can work around the problem, but does anyone have a clue as to
WHY this is happening??? I run Office 2007 Enterprise on Vista
Ultimate... no addins.