Is the addin signed with a real code signing certificate that traces back to
a certificate authority that's recognized on that computer, or is it
self-generated certificate?

The certificate may need to be installed in the certificates cache, or be
added as a trusted publisher.

--
Ken Slovak
[MVP - Outlook]
http://www.slovaktech.com
Author: Professional Programming Outlook 2007.
Reminder Manager, Extended Reminders, Attachment Options.
http://www.slovaktech.com/products.htm


"Ojas" wrote in message
...
On Jul 21, 6:39 am, "Ken Slovak - [MVP - Outlook]"
wrote:
1: No, manifest files can't be signed.

For a VSTO 2005 SE plug-in for Outlook 2007, is there anyway to set
the "Publisher:" value when from Outlook 2007 the user does

Tools = Trust Center = Add-Ins

and then clicks on my add-in name?

Right now that field is still None even though my add-in is signed.