title: Manage NugetPackage for Solution can't find any online packages
body: <p>Somehow, the &quot;<strong>Manage NuGet Packages for Solution...</strong>&quot; Dialog doesn't show any online packages anymore (no items found.):</p>
  <p><img src="https://i.stack.imgur.com/GFfE7.png" alt="enter image description here" /></p>
  <p>But the &quot;<strong>Manage NuGet Packages...</strong>&quot; dialog at the project level <strong>works fine</strong>.</p>
  <p>I already tryed to start Visual Studio (2013 Update 4) with the /Log Parameter but cannot find any errors in the ActivityLog.xml.</p>
  <p>Any Ideas?</p>