Signing an add-in has no effect on CDO security prompts. THe only way to suppress CDO prompts is with the administrator options listed at http://www.outlookcode.com/article.aspx?ID=52. You might consider using Redemption.

--
Sue Mosher, Outlook MVP
Author of Configuring Microsoft Outlook 2003
http://www.turtleflock.com/olconfig/index.htm
and Microsoft Outlook Programming - Jumpstart for
Administrators, Power Users, and Developers
http://www.outlookcode.com/article.aspx?id=54

"Ivan" wrote in message ...
Thanks for your answer!

Now I use CDO to display such dialog.
Is it possible to avoid security warning message when I read selected
recipients?
I do it from signed Outlook Addin written in c++.


"Sue Mosher [MVP-Outlook]" wrote:

Actually, the language does matter, as does your Outlook version. The code sample at http://www.outlookcode.com/d/code/selectnames.htm shows how to do it with CDO 1.21, but that's not supported in .NET languages.

"Ivan" wrote in message ...
How can I display select contacts dialog in Outlook?
For example, the dialog appears when pressing 'To:' button in new created
mail window.
The language doesn't matter.