The error that I see is, “Cannot start the windows outlook. Cannot open the set of folders. Attempt to log on the Microsoft exchange has failed” This message is at random seen without me intervening with anything.
Corrupt Navigation: Set Of Folders Cannot Be Opened
Generally it is the corrupted navigations settings file which make the outlook not open/start successfully, hence requires some repair, which can be done by following the steps mentioned below,
1. For Vista, Windows 7 or Windows 8 users, click on the Start button. On Windows XP, click Start > Run.
2. Type the command below in the search field: outlook.exe /resetnavpane (there is a space between outlook.exe and /
3. Press Enter to reset the Navigation Pane settings and now open Outlook.