Hello, I am looking to see whether VSTO can solve a problem we are facing.

We have a .NET 2.0 winforms app that's distributed via ClickOnce.  One
of the features is that it allows you to create an appointment inside
the program based on some meta data.  The appointment is then
synchronized with the user's Outlook calendar.  The synchronization is
done via the Outlook automation model.

The problem is that Outlook throws up a dialog when it's automation
model is accessed.  The dialog asks for how long the calling application
will be granted access to Outlook.  This is, of course, really annoying,
since the users are completely confused.  To that end, we integrated a
3rd party COM object from Add-in Express (
http://www.add-in-express.com/docs/outlook-security-manager-delpoyment.php
) that suppresses that dialog.  So on the startup of the application, we
would automatically register this COM object in the registry and somehow
the object would suppress the dialog.  And this arrangement has worked
great until recently.

Our users got their rights reduced - they were moved from the PowerUsers
group to the Users group and thus we can't register anything in the
registry.

Is there anything that VSTO can do to help me in this situation?

Regards