Attachment Security Warning

[JTaylor]

When I receive email with MS Word or Excel attachments in Outlook 2003, I
cannot open the attachment directly from the email. When I double-click on
the attachment, I get an Attachment Security Warning window that prompts me
to save the file to disk or cancel (no Open option).

 

[Diane Poremsky]

Did someone try to disable attachment security and screw it up by adding
these formats to the registry?
http://www.slipstick.com/outlook/esecup/blockzips.htm - see if they are in
the level1remove key.