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 then publish, it rechecks that option automatically.

I have a regular Windows Forms project in the same solution that allows me to publish with this unchecked.

Why isn't it allowing me to uncheck the sign option?

visual-studio-2008 deployment clickonce
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