I am running Windows XP with Office 2003 on my laptop computer. I pull my mail
from a POP3 server. All of my information is stored on my computer in the PST
file.

Outlook worked fine for awhile, but now when I try to add an event to my
calendar I get an error message that says:

  "The messaging interface has returned an unknown error. If the problem
persists, restart Outlook"

But restarting doesn't help.  Neither does Scanpst.exe.  Neither does running
update (I have SP1 for Outlook installed).

I can move existing Calendar items, but not change them, or copy them.

Any ideas?

Can I get support from Microsoft for this?

Thanks...

- Carlos

northernspy1@aol.com