Have you tried running a Detect and Repair? Have you tried clearing your forms cache? What version of Outlook are you using?

--�
Milly Staples [MVP - Outlook]

Post all replies to the group to keep the discussion intact.
How to ask a question:
http://support.microsoft.com/KB/555375


After furious head scratching, Huck Rorick asked:

| I tried to delete an email from Outbox. When I do I get the message
|
| "The messaging interface has returned an unknown error. If the
| problem persists, restart Outlook"
|
| I restart Outlook, restart the computer, but still get the same
| message. If I try to move the message I also get an error. If I try
| to dismiss a calendar reminder, I get the same error. I try to
| delete from the Inbox and get the same error.
|
| Any idea what could be going on?
|
|
|
| Thanks for any help,
|
|
|
| Huck