Export an ical or vcal file from korganizer. mail it to a windows machine,
click on the attachment andsave it. Open Outlook, select File->import and
select vcal or ical (whichever is appropriate) and select that saved vcal or
ical. Outlook will try to import it and fail.
I never complained about this before, but this bug exists for at least a year,
if not two. It is present in different versions of Outlook.
yes, it's a known bug in the kdepim since KDE-3.4.2. I think it should be fixed
from KDE upstream.