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Fixing a corrupt Navigation Pane in Outlook

A corrupt Navigation pane in Outlook can cause several issues with Outlook. Most common is the inability to open Outlook. You may see the following error:

Cannot start Microsoft Office Outlook. Cannot open the Outlook window. The set of folders cannot be opened. The file C:\users\%username%\AppData\Local\Microsoft\Outlook\Outlook.pst cannot be opened.

Note: Username and PST name will vary.

Furthermore, a corrupt navigation pane can cause other issues, such as errors accessing favourite’s folder in Outlook, and outlook preventing you from sending email, depending on the issue with the navigation pane.

Recovering the Navigation Pane configuration file

1. Click on the Start Menu

2. Select Run (this will depend on you version of windows)

3. In the field, type the command “outlook.exe /resetnavpane

Deleting the Navigation Pane settings

If the above does not work, you can delete the XML file that stores the navigation pane configuration.

1. Navigate to %appdata%\Microsoft\Outlook

2. Backup the Outlook.xml file

3. Delete the Outlook.xml file

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