How to not sign a ClickOnce manifest

Question

I have an Office 2007 (specifically Outlook 2007) add in created in Visual Studio 2008.

When I uncheck the \"Sign the ClickOnce manifests\" option, and the

Answer 1

While you don't have to sign the manifest any more with Windows Forms, WPF and console applications, VSTO solutions still require that the manifests be signed when using ClickOnce deployment.

Most VSTO scenarios are in the enterprise where best practices require signing of applications. Also since VSTO solutions always run full trust there is a higher risk associated with making signing optional. This is completely separate from signing a DLL file; you don't need to sign the assembly with a ClickOnce-deployed VSTO application, you have to sign the manifests; they handle the hashing and verification of the files at install time.