If you are receiving the following error when opening Outlook then the following solution may work
Cannot start Microsoft Outlook. Cannot open the Outlook window. Invalid XML, the view cannot be loaded.
Windows 7 :
Close any error message boxes
Click on the Microsft circle in the bottom left corner of your screen
Type "outlook /resetnavpane" without the quotes and a space between outlook and /resetnavpane
Try to open Outlook again
If you get an error "File not found" this usually means the space between "outlook" and "/resetnavpane" has been missed