Start Outlook with the resetnavpane switch and see if it works now;
Start-> Run; outlook.exe /resetnavpane
If not, see
http://www.howto-outlook.com/faq/outlookdoesntstart.htm
--
Robert Sparnaaij [MVP-Outlook]
Coauthor, Configuring Microsoft Outlook 2003
http://www.howto-outlook.com/
Outlook FAQ, HowTo, Downloads, Add-Ins and more
http://www.msoutlook.info/
Real World Questions, Real World Answers
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"Mark N" <Mark
(E-Mail Removed)> wrote in message
news:E66D0655-8159-4BEC-9EBF-(E-Mail Removed)...
> I cannot start MS Outlook 2007. Error message="Cannot start microsoft
> outlook. Cannot open outlook window" Never had this problem prior to
> today.