Cannot open the outlook window | Unable to start Microsoft O

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I can’t start Microsoft Outlook 2016, 2013, or 2010 or receive the error “Cannot start Microsoft Office Outlook. Cannot open the Outlook Window”


Run the /resetnavpane command
The navigation pane is the leftmost pane in Outlook where you'll find your folder list and the icons to move between Mail, Calendar, People, and Tasks. Running the /resetnavpane command removes all customizations to the navigation pane.

1.Close Outlook.

2.Choose Start > Run.

3.In the Open box, type Outlook.exe /resetnavpane, and then choose OK.