It sounds like you have a 3rd party add-in installed that is archiving
attachments. Outlook doesn't do this on its own. Check your add-ins and see
if you can figure out what's happening.

Signature
Jocelyn Fiorello
MVP - Outlook
*** Messages sent to my e-mail address will NOT be answered -- please reply
only to the newsgroup to preserve the message thread. ***
> I have my e-mails export to a pst file, then I found some attachment changed
> to ArchiveInfo .htm, in which I got such message:
[quoted text clipped - 10 lines]
>
> Thanks.
d270@bellatlantic.net - 28 Mar 2007 00:57 GMT
On Feb 21, 2:38 am, Jocelyn Fiorello [MVP - Outlook]
<JocelynFiorelloMVPOutl...@discussions.microsoft.com> wrote:
> It sounds like you have a 3rd party add-in installed that is archiving
> attachments. Outlook doesn't do this on its own. Check your add-ins and see
[quoted text clipped - 21 lines]
>
> > Thanks.
I have encountered the same situation. I have not added any 3rd party
add-ins. My current thought is that this is some kind of malware. The
files have disappeared into space. Obviously, double clicking the
message merely opens the message in its own window. Unfortunately,
Norton does not identify any issues in my computer, even after a full
scan. It seems that the issue is not yet sufficiently widespread to
have gotten the attention of anyone that can do anything about it.
Dave West