title: How to remove duplicated assemblies from the Visual Studio Choose Toolbox Items dialog?
body: <p>I have duplicated assemblies in the .NET Framework Components tab of a Choose Toolbox Items menu item: <a href="https://i.stack.imgur.com/Pkqsf.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/Pkqsf.png" alt="enter image description here"></a></p>
  
  <p>The full code for assembly loading can be found <a href="https://github.com/DevExpress/AjaxControlToolkit/blob/master/AjaxControlToolkitVsPackage/AjaxControlToolkitVsPackage.cs" rel="nofollow noreferrer">here</a>, but the main idea is following:</p>
  
  <ul>
  <li>Probe assembly in user docs</li>
  <li>Probe assembly in VS extensions</li>
  <li>Probe assembly near the package assembly</li>
  <li>Load toolbox items into the toolbox by calling <code>IToolboxService.AddToolboxItem()</code> method</li>
  </ul>
  
  <p>The actual dll that is really loaded is v16.1.2.0.<br>
  v15.1.1.100 и 15.1.2.0 do not exist on a disk and I can't find any trace of these rudimentary assemblies on my disk and in registry.</p>
  
  <p>How can I remove outdated entries from the list?</p>