I’ve added a repo that shows you how to do this. From the README.md: Requirements Generally speaking, using libraries targeting .NET Standard in an application targeting .NET Framework requires the application project to include a NuGet reference for .NET Standard (NETStandard.Library). This ensures that the right set of assemblies are included with the application. In … Read more
I had the same problem and no suggested solutions that I found worked. My solution for this issue was: Check App.config and packages.config to see if the versions match. Originally my app.config contained: <dependentAssembly> <assemblyIdentity name=”System.Runtime” publicKeyToken=”b03f5f7f11d50a3a” culture=”neutral” /> <bindingRedirect oldVersion=”0.0.0.0-4.1.1.0″ newVersion=”4.1.1.0″ /> </dependentAssembly> But the packages.config contained: <package id=”System.Runtime” version=”4.3.0″ targetFramework=”net461″ requireReinstallation=”true” /> I … Read more