title: Nuget installed panel empty after VS 2017 update
body: <p>I updated my VS to 15.7.3 version today and now my Nuget panel with installed packages is empty. Not empty but showing only System.Runtime.</p>
  
  <p>I have a packages.config file in my project and everything worked just fine before the update.</p>
  
  <p>Also the solution wont build. It is showing the following error</p>
  
  <pre><code>This project references NuGet package(s) that are missing on this computer. Use NuGet Package Restore to download them.  For more information, see http://go.microsoft.com/fwlink/?LinkID=322105. The missing file is ..\packages\Microsoft.Bcl.Build.1.0.21\build\Microsoft.Bcl.Build.targets. C:\Users\User\Source\Repos\xxxx1-sol\xxxx1\xxxx1.csproj 6039    
  </code></pre>
  
  <p>What might be the problem ?</p>
  
  <p>Update 1</p>
  
  <p>I tried installing all of the packages again and after I installed a couple of them I saw this in References</p>
  
  <p><a href="https://i.stack.imgur.com/M9WZ3.jpg" rel="noreferrer"><img src="https://i.stack.imgur.com/M9WZ3.jpg" alt="References window"></a></p>
  
  <p>Update 2:</p>
  
  <p>I tried deleting the .packages folder before installing the packages again via Nuget and the folder .packages was not created</p>
  
  <p>My project path is C:\Users\User\Source\Repos\Project123-Git</p>
  
  <p>Also I see that now I have a folder .nuget at C:\Users\User.nuget that has the folder packages in it.</p>
  
  <p>I also tried deleting the file packages.config but Nuget still has my newly installed packages even if packages.config does not exsist</p>