An error occurred while signing: SignTool.exe not found.

  While publishing a ClickOnce application using Visual Studio 2010, it may fail with the following error message: Error 1 Cannot publish because a project failed to build.    Error 2 An error occurred while signing: SignTool.exe not found. Build output: Building WindowsFormsApplication… Error: Cannot publish because a project failed to build. The signtool.exe is located…

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