Outlook Error: "Cannot start Outlook. Unable to open the Outlook Window"
Issue
You receive the following message when attempting to launch Microsoft Outlook:
"Cannot start Outlook. Unable to open the Outlook window."
Cause
This issue is caused when the MailProfileName.xml file located in: C:\Users\UserName\AppData\Roaming\Microsoft\Outlook has become corrupted.
This XML file maintains the settings for the navigation pane in Outlook.
Resolution
To resolve this issue, use the following steps.
- Open the Run dialogue box
- Type the following command: Outlook.exe /resetnavpane
- Select OK.

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