title: Failure adding WCF service after cancelling
body: <p>I was trying to add a WCF service, I forgot to change the class name before clicking finish and so I cancelled it while it was in the first few steps of the import process.  I tried again with the proper name, and now I get the following error.</p>
  
  <pre><code>[8/24/2017 11:53:41.664 AM] Adding Microsoft WCF Web Service Reference Provider - Preview to the project.
  [8/24/2017 11:53:41.674 AM] Importing web service metadata ...
  [8/24/2017 11:53:41.750 AM] Number of services found: 2
  [8/24/2017 11:53:41.768 AM] Restoring NuGet packages ...
  [8/24/2017 11:53:43.905 AM] Error:Unable to restore NuGet packages, please ensure packages can be restored for the project.
  [8/24/2017 11:53:44.013 AM] Failed adding Microsoft WCF Web Service Reference Provider - Preview to the project.
  </code></pre>
  
  <p>I tried re-installing WCF provider, rebooting, nothing seems to help.  Where can I look for a more detailed log as to why this is happening?  VS Pro 2017 15.3.1, .net core 2.0 web project</p>