1.Recover the Navigation Pane configuration file Below you will find 2 workarounds that fixes the issue. Therefore, let’s see how one can get them fixed. The set of folders cannot be opened” issue. Now you know reasons what causes “ Cannot start Microsoft outlook. Workarounds to Solve “Cannot start Microsoft Outlook” issue And the solutions to this query are listed below. Now the question arises How to fix Cannot Start Microsoft Outlook?. Anyway, whatever the reason is, the outcome is the same – you cannot open Outlook.
If the file got corrupted then you will find that its size becomes 0 kb.
