Outlook 2016 refusing to start

Added a new Exchange account to Outlook 2016 the other day and when I ran Outlook it responded with:

“Cannot start Microsoft Outlook. Cannot open the Outlook window. The set of folders cannot be opened. The file C:\Users\xxx\AppData\Local\Microsodt\Outlook\xxx@yyy.com.ost is not an Outlook data file(.ost).”

Some quick Googlephoo found this page on the Technet forums. The first fix resolved the problem.

1. Start Outlook with the switch “/resetnavpane”.

Press Win + R, type “outlook.exe /resetnavpane” in the Run window, press Enter.

This will recover the Navigation Pane configuration file, it works for some users in such scenario.

Restarted Outlook 2016 to be sure. No error occured.


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