File-Work Offline. Close and restart Outlook and delete the item from your
outbox.

--�
Milly Staples [MVP - Outlook]

Post all replies to the group to keep the discussion intact. All
unsolicited mail sent to my personal account will be deleted without
reading.

After furious head scratching, TTAO asked:

| I'm using XP with Outlook 2003. I've got iCalendar enabled, and have
| sent a meeting request to a colleague, but it is sitting in my outbox
| and I can't open or delete it. It is blocking all subsequent emails
| from being sent as well.