I have developed add-in for MS Outlook 2K3 using C# 2.0 and VSTO 2K5.

It installs and works fine on most of the machines but on few
machines, I am getting security warning that "C:\Program Files\Common
Files\microsoft shared\VSTO\8.0\VSTOActionsPaneEngine.dll" contains
macros by Microsoft Corporation. Macros may contain
viruses...yada...yada...",

I have no clue why this prompt is coming as neither my add-in or user
is using any macro in MS Outlook 2K3. This prompt didn't showed before
my add-in installation so it has to do something with add-in itself.

If anyone has solution or debugging steps for this prompt, I'll really
appreciate your reply.

Thanks in advance.