Cannot start Microsoft Outlook. Cannot open the Outlook window

Windows Vista and newer
Start-> type; outlook.exe /resetnavpane

Windows XP
Start-> Run; outlook.exe /resetnavpane

Please note the space between outlook.exe and /resetnavpane.

While the above method currently applies to most cases experiencing this issue, there could be other causes for this to happen as well. If your outlook is configured to connect to the Mail server using EAS please see this article:  If you are still experiencing the issue after applying this fix you can try these troubleshooting steps or post in the Outlook newsgroups.



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