How do you fix Cannot start Microsoft Outlook Cannot open the Outlook window the set of folders Cannot be opened an unexpected error has occurred?

If Outlook still gives you the “Cannot start Microsoft Outlook. Cannot open the Outlook window. The set of folders cannot be opened.” error, you can attempt to manually remove the Navigation Pane configuration file and have Outlook reset it. Press the Windows + R keys on your keyboard to bring up the Run application.

If Outlook still gives you the “Cannot start Microsoft Outlook. Cannot open the Outlook window. The set of folders cannot be opened.” error, you can attempt to manually remove the Navigation Pane configuration file and have Outlook reset it. Press the Windows + R keys on your keyboard to bring up the Run application.

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