Outlook failed to start correctly last time. Starting Outlook in safe mode will help you correct or isolate a startup problem in order to successfully start the program. Some functionality may be disabled in this mode. Do You want to start Outlook in safe mode
I found the solution at http://www.technize.com/2008/03/14/outlook-failed-to-start-correctly-last-time/
Solution:
The solution to this problem is rather simple. Only deleting the following key will solve the problem:
Navigate through these items with registry editor REGEDIT and delete the Key Resiliency
HKLM
Software
Microsoft
Windows NT
Current Version
Terminal Server
Install
Software
Microsoft
Office
11.0
Outlook
Resiliency