Message stuck in
It doesn’t happen
too often but when a message is stuck in the Outbox it can be a real pain.
Open the message
from the Outbox and close it again. Now select the message and press DELETE.
Put Outlook in
offline mode. To do this go to File-> Work Offline. Now restart Outlook and
see if you can delete it (you can try this in combination with method 1). Don’t
forget to put Outlook back On-line again.