title: SignTool error when signing AppX file: "Error: SignerSign() failed." (-2147024693/0x800700cb)
body: <p>I am creating an Appx package using <code>makeappx.exe</code> and then try to sign it using <code>SignTool.exe</code>.</p>
  
  <p>The error I get from SignTool is:</p>
  
  <blockquote>
    <p>"Error: SignerSign() failed." (-2147024693/0x800700cb)</p>
  </blockquote>
  
  <p>The certificate I am using is created by me following instructions from <a href="http://msdn.microsoft.com/en-us/library/windows/desktop/jj835832%28v=vs.85%29.aspx" rel="noreferrer">here</a>.</p>
  
  <p>In <code>EventViewer</code> there is no record about this failed operation!</p>
  
  <p>I do not understand what this error means and how to fix it!!
  Has anyone encountered this before, and found a solution?</p>
  
  <p>I can't use Visual Studio so I need to stick with <code>makeappx.exe</code>.</p>