Set View for All Folders
This guide will show you how to set the view in outlook to see all folders
Change View Options
Apply view to subfolders
NOTE: If the view is not applied to a desired folder, then the folder was set specifically prior to performing the above steps. To correct this action, reset the view to all of your folders back to the default setting by launching Outlook with the cleanviews switch. From the Run command, type outlook.exe /cleanviews and push the Enter key.