I attached a file to an outgoing email which was too long. At the time, I
didn't realize how large the file was and have been unable to cancel the
transmission. It has been transmitting for almost 24 hours. HELP!!!

Start computer w/out any type of network/modem connection (e.g. unplug
network/phone cord from wall jack). Logon to windows then start Outlook.
You should be able to delete the item from the outbox w/out issue. Shut
system down and then reconnect network/modem.

"Haggis Man" <(E-Mail Removed)> wrote in message
news:B255EA5C-08DE-4005-8B9C-(E-Mail Removed)...
>I attached a file to an outgoing email which was too long. At the time, I
> didn't realize how large the file was and have been unable to cancel the
> transmission. It has been transmitting for almost 24 hours. HELP!!!

Set Outlook offline (File menu) and delete it.
http://www.outlook-tips.net/howto/stuck_message.htm

--
Diane Poremsky [MVP - Outlook]
Author, Teach Yourself Outlook 2003 in 24 Hours
Need Help with Common Tasks? http://www.outlook-tips.net/beginner/
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"Haggis Man" <(E-Mail Removed)> wrote in message
news:B255EA5C-08DE-4005-8B9C-(E-Mail Removed)...
>I attached a file to an outgoing email which was too long. At the time, I
> didn't realize how large the file was and have been unable to cancel the
> transmission. It has been transmitting for almost 24 hours. HELP!!!