http://dualbrain.com/blog/archive/2006/06/14/ClickOnce-Tip-of-the-Day.aspxThere are a couple of options available for signing your ClickOnce application: When the signing options screen appears (which it does whenever you save a manifest file using MageUI.exe), you'll probably be tempted to use one of the “stored certificates”.enCommunityServer 2.1 (Build: 60809.935)