The form required to view this message cannot be displayed. Contact your administrator. Outlook 2010

To solve this case you have to
1) Log on into computer with different user who has administrator rights.
2) On the hanged user profile:
remove %userprofile%\AppData\Local\Microsoft\Windows\usrclass.dat
remove %userprofile%\AppData\Local\Microsoft\FORMS\FRMCACHE.DAT