title: Detected package downgrade warning (dotnet core, vs 2017)
body: <p>I have just updated all my nuget packages for my solution (dotnet core 1.1 project).</p>
  <p>I am now getting the following warnings and I don't really know what they mean.</p>
  <p><a href="https://i.stack.imgur.com/m6d9K.png" rel="noreferrer"><img src="https://i.stack.imgur.com/m6d9K.png" alt="NETStandard.Library downgrade warning" /></a></p>
  <hr />
  <p><strong>Update:</strong> I am still getting warnings mentioned above. My web projects warn about the Microsoft.NETCore.App package (see screenshot below) and my lib projects warn about NETStandard.Library (see screenshot above)</p>
  <p><a href="https://i.stack.imgur.com/Ozt7k.png" rel="noreferrer"><img src="https://i.stack.imgur.com/Ozt7k.png" alt="Microsoft.NETCore.App downgrade warning" /></a></p>
  <p>When trying to update Microsoft.NETCore.App in the NuGet package manager, I am getting the following error:</p>
  <p><a href="https://i.stack.imgur.com/efeSv.png" rel="noreferrer"><img src="https://i.stack.imgur.com/efeSv.png" alt="NuGet upgrade error" /></a></p>
  <p>Hope someone can help me get rid of those warnings and setup everything it is meant to be, so I can update all my packages.</p>