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Upgrade of ASP.NET on 4.6 to 4.7.2 fails: The type 'System.Object' is defined in an assembly that is not referenced. #877

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shadowmint opened this issue Sep 25, 2018 · 3 comments
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Upgrade of ASP.NET on 4.6 to 4.7.2 fails: The type 'System.Object' is defined in an assembly that is not referenced. #877

shadowmint opened this issue Sep 25, 2018 · 3 comments
Labels
netfx-compat
Milestone
.NET Standard 2.1

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@shadowmint
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I've commented in #481 about this, but in order to avoid cluttering that thread, here are the specific details:

Given a 4.6 ASP.Net project, the following steps were taken, as recommended in #481:

  • Re-target to 4.7.2
  • Convert .csproj to PackageReference by hand, manually converting files in packages.config into the correct format and adding them to an ItemGroup in the csproj file.
  • Remove packages.config
  • Remove all binaries (clean repo clone)
  • Nuget restore
  • Remove all lines from the assemblyBinding section of the web.config
  • Build
  • Double click warning in VS to update web.config
  • Build <-- No additional warnings seen

This generates the following assembly binding section in the web.config:

    <runtime>
      <assemblyBinding xmlns="urn:schemas-microsoft-com:asm.v1">
        <dependentAssembly>
          <assemblyIdentity name="WebGrease" publicKeyToken="31BF3856AD364E35" culture="neutral"/>
          <bindingRedirect oldVersion="0.0.0.0-1.6.5135.21930" newVersion="1.6.5135.21930"/>
        </dependentAssembly>
        <dependentAssembly>
          <assemblyIdentity name="System.Web.Mvc" publicKeyToken="31BF3856AD364E35" culture="neutral"/>
          <bindingRedirect oldVersion="0.0.0.0-5.2.3.0" newVersion="5.2.3.0"/>
        </dependentAssembly>
        <dependentAssembly>
          <assemblyIdentity name="System.Web.Http" publicKeyToken="31BF3856AD364E35" culture="neutral"/>
          <bindingRedirect oldVersion="0.0.0.0-5.2.3.0" newVersion="5.2.3.0"/>
        </dependentAssembly>
        <dependentAssembly>
          <assemblyIdentity name="System.Reflection.Metadata" publicKeyToken="B03F5F7F11D50A3A" culture="neutral"/>
          <bindingRedirect oldVersion="0.0.0.0-1.3.0.0" newVersion="1.3.0.0"/>
        </dependentAssembly>
        <dependentAssembly>
          <assemblyIdentity name="System.Net.Http.Formatting" publicKeyToken="31BF3856AD364E35" culture="neutral"/>
          <bindingRedirect oldVersion="0.0.0.0-5.2.3.0" newVersion="5.2.3.0"/>
        </dependentAssembly>
        <dependentAssembly>
          <assemblyIdentity name="System.IdentityModel.Tokens.Jwt" publicKeyToken="31BF3856AD364E35" culture="neutral"/>
          <bindingRedirect oldVersion="0.0.0.0-4.0.20622.1351" newVersion="4.0.20622.1351"/>
        </dependentAssembly>
        <dependentAssembly>
          <assemblyIdentity name="System.Data.SqlClient" publicKeyToken="B03F5F7F11D50A3A" culture="neutral"/>
          <bindingRedirect oldVersion="0.0.0.0-4.1.0.0" newVersion="4.1.0.0"/>
        </dependentAssembly>
        <dependentAssembly>
          <assemblyIdentity name="System.Collections.Immutable" publicKeyToken="B03F5F7F11D50A3A" culture="neutral"/>
          <bindingRedirect oldVersion="0.0.0.0-1.2.0.0" newVersion="1.2.0.0"/>
        </dependentAssembly>
        <dependentAssembly>
          <assemblyIdentity name="Newtonsoft.Json" publicKeyToken="30AD4FE6B2A6AEED" culture="neutral"/>
          <bindingRedirect oldVersion="0.0.0.0-10.0.0.0" newVersion="10.0.0.0"/>
        </dependentAssembly>
        <dependentAssembly>
          <assemblyIdentity name="Microsoft.Owin" publicKeyToken="31BF3856AD364E35" culture="neutral"/>
          <bindingRedirect oldVersion="0.0.0.0-3.1.0.0" newVersion="3.1.0.0"/>
        </dependentAssembly>
        <dependentAssembly>
          <assemblyIdentity name="Microsoft.IdentityModel.Protocol.Extensions" publicKeyToken="31BF3856AD364E35" culture="neutral"/>
          <bindingRedirect oldVersion="0.0.0.0-1.0.2.33" newVersion="1.0.2.33"/>
        </dependentAssembly>
        <dependentAssembly>
          <assemblyIdentity name="log4net" publicKeyToken="669E0DDF0BB1AA2A" culture="neutral"/>
          <bindingRedirect oldVersion="0.0.0.0-2.0.8.0" newVersion="2.0.8.0"/>
        </dependentAssembly>
        <dependentAssembly>
          <assemblyIdentity name="Common.Logging" publicKeyToken="AF08829B84F0328E" culture="neutral"/>
          <bindingRedirect oldVersion="0.0.0.0-3.3.0.0" newVersion="3.3.0.0"/>
        </dependentAssembly>
        <dependentAssembly>
          <assemblyIdentity name="Antlr3.Runtime" publicKeyToken="EB42632606E9261F" culture="neutral"/>
          <bindingRedirect oldVersion="0.0.0.0-3.5.0.2" newVersion="3.5.0.2"/>
        </dependentAssembly>
      </assemblyBinding>
    </runtime>

Notice that System.Runtime is not found in this section after using the VS tooling.

The application compiles, but at runtime it generates this error:

Error occurred in controller action: c:\Development\Web\Views\Shared\_Layout.cshtml(18): error CS0012: The type 'System.Object' is defined in an assembly that is not referenced. You must add a reference to assembly 'System.Runtime, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a'.. | c:\Development\Web\Views\Shared\_Layout.cshtml(18): error CS0012: The type 'System.Object' is defined in an assembly that is not referenced. You must add a reference to assembly 'System.Runtime, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a'. |
   at System.Web.Compilation.AssemblyBuilder.Compile()
   at System.Web.Compilation.BuildProvidersCompiler.PerformBuild()
   at System.Web.Compilation.BuildManager.CompileWebFile(VirtualPath virtualPath)
   at System.Web.Compilation.BuildManager.GetVPathBuildResultInternal(VirtualPath virtualPath, Boolean noBuild, Boolean allowCrossApp, Boolean allowBuildInPrecompile, Boolean throwIfNotFound, Boolean ensureIsUpToDate)
   at System.Web.Compilation.BuildManager.GetVPathBuildResultWithNoAssert(HttpContext context, VirtualPath virtualPath, Boolean noBuild, Boolean allowCrossApp, Boolean allowBuildInPrecompile, Boolean throwIfNotFound, Boolean ensureIsUpToDate)
   at System.Web.Compilation.BuildManager.GetVirtualPathObjectFactory(VirtualPath virtualPath, HttpContext context, Boolean allowCrossApp, Boolean throwIfNotFound)
   at System.Web.Compilation.BuildManager.CreateInstanceFromVirtualPath(VirtualPath virtualPath, Type requiredBaseType, HttpContext context, Boolean allowCrossApp)
   at System.Web.WebPages.BuildManagerWrapper.CreateInstanceOfType[T](String virtualPath)
   at System.Web.WebPages.VirtualPathFactoryExtensions.CreateInstance[T](IVirtualPathFactory factory, String virtualPath)
   at System.Web.WebPages.VirtualPathFactoryManager.CreateInstanceOfType[T](String virtualPath)
   at System.Web.WebPages.VirtualPathFactoryExtensions.CreateInstance[T](IVirtualPathFactory factory, String virtualPath)
   at System.Web.WebPages.WebPageBase.CreatePageFromVirtualPath(String virtualPath, HttpContextBase httpContext, Func`2 virtualPathExists, DisplayModeProvider displayModeProvider, IDisplayMode displayMode)
   at System.Web.WebPages.WebPageBase.<>c__DisplayClass3.<RenderPageCore>b__2(TextWriter writer)
   at System.Web.WebPages.HelperResult.WriteTo(TextWriter writer)
   at System.Web.WebPages.WebPageBase.Write(HelperResult result)
   at System.Web.WebPages.WebPageBase.RenderSurrounding(String partialViewName, Action`1 body)
   at System.Web.WebPages.WebPageBase.PopContext()
   at System.Web.WebPages.WebPageBase.ExecutePageHierarchy(WebPageContext pageContext, TextWriter writer, WebPageRenderingBase startPage)
   at System.Web.Mvc.RazorView.RenderView(ViewContext viewContext, TextWriter writer, Object instance)
   at System.Web.Mvc.BuildManagerCompiledView.Render(ViewContext viewContext, TextWriter writer)
   at System.Web.Mvc.ViewResultBase.ExecuteResult(ControllerContext context)
   at System.Web.Mvc.ControllerActionInvoker.InvokeActionResult(ControllerContext controllerContext, ActionResult actionResult)
   at System.Web.Mvc.ControllerActionInvoker.InvokeActionResultFilterRecursive(IList`1 filters, Int32 filterIndex, ResultExecutingContext preContext, ControllerContext controllerContext, ActionResult actionResult)
   at System.Web.Mvc.ControllerActionInvoker.InvokeActionResultFilterRecursive(IList`1 filters, Int32 filterIndex, ResultExecutingContext preContext, ControllerContext controllerContext, ActionResult actionResult)
   at System.Web.Mvc.ControllerActionInvoker.InvokeActionResultFilterRecursive(IList`1 filters, Int32 filterIndex, ResultExecutingContext preContext, ControllerContext controllerContext, ActionResult actionResult)
   at System.Web.Mvc.ControllerActionInvoker.InvokeActionResultWithFilters(ControllerContext controllerContext, IList`1 filters, ActionResult actionResult)
   at System.Web.Mvc.Async.AsyncControllerActionInvoker.<>c__DisplayClass21.<>c__DisplayClass2b.<BeginInvokeAction>b__1c()
   at System.Web.Mvc.Async.AsyncControllerActionInvoker.<>c__DisplayClass21.<BeginInvokeAction>b__1e(IAsyncResult asyncResult)

Other conflicting advice exists in various places, including the suggestion that PackageReferences are not support in ASP.Net, however, in order to cover my bases, I also tried the following:

  • Revert all changes
  • Re-target to 4.7.2
  • Remove all binaries (clean repo clone)
  • Nuget restore
  • Remove all lines from the assemblyBinding section of the web.config
  • Build
  • Double click warning in VS to update web.config
  • Build <-- No additional warnings seen

This resulted in the identical error.

I also tried:

  • Revert all changes
  • Re-target to 4.6.1
  • Remove all binaries (clean repo clone)
  • Nuget restore
  • Remove all lines from the assemblyBinding section of the web.config
  • Build
  • Double click warning in VS to update web.config
  • Build

This resulted in the identical error.

In order to further ensure I was not experiencing a local issue, I repeated these steps from the clean repo clone on a different machine, with identical results.

I notice that after a build, there is no System.Runtime.dll in the bin folder when targeting 4.7.2, because, as noted in https://github.com/dotnet/corefx/issues/31536, not version targeting that runtime appears to currently exist.

I conclude that the VS tooling to automatically generate bindings doesn't work correctly in some cases (eg. mine), and that it is simply not possible to currently migrate some current ASP.Net projects.

If nothing else, I leave this here for other people to find on the issue tracker.
@shadowmint
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shadowmint commented Sep 25, 2018 •
edited
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For reference, here is the pre-re-targetting packages.config, in full:

<?xml version="1.0" encoding="utf-8"?>
<packages>
  <package id="Antlr" version="3.5.0.2" targetFramework="net45" />
  <package id="AutoMapper" version="6.1.1" targetFramework="net46" />
  <package id="bootstrap" version="3.0.0" targetFramework="net46" />
  <package id="Common.Logging" version="3.3.0" targetFramework="net46" />
  <package id="Common.Logging.Core" version="3.3.0" targetFramework="net46" />
  <package id="Common.Logging.Log4Net1211" version="3.3.0" targetFramework="net46" />
  <package id="CommonServiceLocator" version="1.3" targetFramework="net451" />
  <package id="Glimpse" version="1.8.5" targetFramework="net451" />
  <package id="Glimpse.Ado" version="1.7.1" targetFramework="net451" />
  <package id="Glimpse.AspNet" version="1.9.0" targetFramework="net451" />
  <package id="Glimpse.EF6" version="1.6.2" targetFramework="net451" />
  <package id="Glimpse.Mvc5" version="1.5.3" targetFramework="net451" />
  <package id="HtmlRenderer.Core" version="1.5.0.5" targetFramework="net46" />
  <package id="IdentityModel" version="1.9.2" targetFramework="net46" />
  <package id="jQuery" version="1.10.2" targetFramework="net46" />
  <package id="jQuery.Validation" version="1.11.1" targetFramework="net451" />
  <package id="JSNLog" version="2.7.7.0" targetFramework="net451" />
  <package id="JSNLog.Log4Net" version="2.7.7" targetFramework="net451" />
  <package id="Kentor.OwinCookieSaver" version="1.1.1" targetFramework="net46" />
  <package id="log4net" version="2.0.8" targetFramework="net46" />
  <package id="Microsoft.AspNet.Identity.Core" version="2.2.1" targetFramework="net46" />
  <package id="Microsoft.AspNet.Mvc" version="5.2.3" targetFramework="net46" />
  <package id="Microsoft.AspNet.Razor" version="3.2.3" targetFramework="net46" />
  <package id="Microsoft.AspNet.Web.Optimization" version="1.1.3" targetFramework="net451" />
  <package id="Microsoft.AspNet.WebApi" version="5.2.3" targetFramework="net451" />
  <package id="Microsoft.AspNet.WebApi.Client" version="5.2.3" targetFramework="net451" />
  <package id="Microsoft.AspNet.WebApi.Core" version="5.2.3" targetFramework="net451" />
  <package id="Microsoft.AspNet.WebApi.WebHost" version="5.2.3" targetFramework="net451" />
  <package id="Microsoft.AspNet.WebPages" version="3.2.3" targetFramework="net46" />
  <package id="Microsoft.AspNetCore.Antiforgery" version="1.0.0" targetFramework="net46" />
  <package id="Microsoft.AspNetCore.Authorization" version="1.0.0" targetFramework="net46" />
  <package id="Microsoft.AspNetCore.Cors" version="1.0.0" targetFramework="net46" />
  <package id="Microsoft.AspNetCore.Cryptography.Internal" version="1.0.0" targetFramework="net46" />
  <package id="Microsoft.AspNetCore.DataProtection" version="1.0.0" targetFramework="net46" />
  <package id="Microsoft.AspNetCore.DataProtection.Abstractions" version="1.0.0" targetFramework="net46" />
  <package id="Microsoft.AspNetCore.Diagnostics.Abstractions" version="1.0.0" targetFramework="net46" />
  <package id="Microsoft.AspNetCore.Hosting.Abstractions" version="1.0.0" targetFramework="net46" />
  <package id="Microsoft.AspNetCore.Hosting.Server.Abstractions" version="1.0.0" targetFramework="net46" />
  <package id="Microsoft.AspNetCore.Html.Abstractions" version="1.0.0" targetFramework="net46" />
  <package id="Microsoft.AspNetCore.Http" version="1.0.0" targetFramework="net46" />
  <package id="Microsoft.AspNetCore.Http.Abstractions" version="1.0.0" targetFramework="net46" />
  <package id="Microsoft.AspNetCore.Http.Extensions" version="1.0.0" targetFramework="net46" />
  <package id="Microsoft.AspNetCore.Http.Features" version="1.0.0" targetFramework="net46" />
  <package id="Microsoft.AspNetCore.JsonPatch" version="1.0.0" targetFramework="net46" />
  <package id="Microsoft.AspNetCore.Localization" version="1.0.0" targetFramework="net46" />
  <package id="Microsoft.AspNetCore.Mvc" version="1.0.0" targetFramework="net46" />
  <package id="Microsoft.AspNetCore.Mvc.Abstractions" version="1.0.0" targetFramework="net46" />
  <package id="Microsoft.AspNetCore.Mvc.ApiExplorer" version="1.0.0" targetFramework="net46" />
  <package id="Microsoft.AspNetCore.Mvc.Core" version="1.0.0" targetFramework="net46" />
  <package id="Microsoft.AspNetCore.Mvc.Cors" version="1.0.0" targetFramework="net46" />
  <package id="Microsoft.AspNetCore.Mvc.DataAnnotations" version="1.0.0" targetFramework="net46" />
  <package id="Microsoft.AspNetCore.Mvc.Formatters.Json" version="1.0.0" targetFramework="net46" />
  <package id="Microsoft.AspNetCore.Mvc.Formatters.Xml" version="1.0.0" targetFramework="net46" />
  <package id="Microsoft.AspNetCore.Mvc.Localization" version="1.0.0" targetFramework="net46" />
  <package id="Microsoft.AspNetCore.Mvc.Razor" version="1.0.0" targetFramework="net46" />
  <package id="Microsoft.AspNetCore.Mvc.Razor.Host" version="1.0.0" targetFramework="net46" />
  <package id="Microsoft.AspNetCore.Mvc.TagHelpers" version="1.0.0" targetFramework="net46" />
  <package id="Microsoft.AspNetCore.Mvc.ViewFeatures" version="1.0.0" targetFramework="net46" />
  <package id="Microsoft.AspNetCore.Razor" version="1.0.0" targetFramework="net46" />
  <package id="Microsoft.AspNetCore.Razor.Runtime" version="1.0.0" targetFramework="net46" />
  <package id="Microsoft.AspNetCore.Routing" version="1.0.0" targetFramework="net46" />
  <package id="Microsoft.AspNetCore.Routing.Abstractions" version="1.0.0" targetFramework="net46" />
  <package id="Microsoft.AspNetCore.WebUtilities" version="1.0.0" targetFramework="net46" />
  <package id="Microsoft.Bcl" version="1.1.10" targetFramework="net451" />
  <package id="Microsoft.Bcl.Build" version="1.0.14" targetFramework="net451" />
  <package id="Microsoft.CodeAnalysis.Analyzers" version="1.1.0" targetFramework="net46" />
  <package id="Microsoft.CodeAnalysis.Common" version="1.3.0" targetFramework="net46" />
  <package id="Microsoft.CodeAnalysis.CSharp" version="1.3.0" targetFramework="net46" />
  <package id="Microsoft.CSharp" version="4.0.1" targetFramework="net46" />
  <package id="Microsoft.DotNet.InternalAbstractions" version="1.0.0" targetFramework="net46" />
  <package id="Microsoft.Extensions.Caching.Abstractions" version="1.0.0" targetFramework="net46" />
  <package id="Microsoft.Extensions.Caching.Memory" version="1.0.0" targetFramework="net46" />
  <package id="Microsoft.Extensions.Caching.SqlServer" version="1.0.0" targetFramework="net46" />
  <package id="Microsoft.Extensions.Configuration.Abstractions" version="1.0.0" targetFramework="net46" />
  <package id="Microsoft.Extensions.DependencyInjection" version="1.0.0" targetFramework="net46" />
  <package id="Microsoft.Extensions.DependencyInjection.Abstractions" version="1.0.0" targetFramework="net46" />
  <package id="Microsoft.Extensions.DependencyModel" version="1.0.0" targetFramework="net46" />
  <package id="Microsoft.Extensions.FileProviders.Abstractions" version="1.0.0" targetFramework="net46" />
  <package id="Microsoft.Extensions.FileProviders.Composite" version="1.0.0" targetFramework="net46" />
  <package id="Microsoft.Extensions.FileProviders.Physical" version="1.0.0" targetFramework="net46" />
  <package id="Microsoft.Extensions.FileSystemGlobbing" version="1.0.0" targetFramework="net46" />
  <package id="Microsoft.Extensions.Globalization.CultureInfoCache" version="1.0.0" targetFramework="net46" />
  <package id="Microsoft.Extensions.Localization" version="1.0.0" targetFramework="net46" />
  <package id="Microsoft.Extensions.Localization.Abstractions" version="1.0.0" targetFramework="net46" />
  <package id="Microsoft.Extensions.Logging.Abstractions" version="1.0.0" targetFramework="net46" />
  <package id="Microsoft.Extensions.ObjectPool" version="1.0.0" targetFramework="net46" />
  <package id="Microsoft.Extensions.Options" version="1.0.0" targetFramework="net46" />
  <package id="Microsoft.Extensions.PlatformAbstractions" version="1.0.0" targetFramework="net46" />
  <package id="Microsoft.Extensions.Primitives" version="1.0.0" targetFramework="net46" />
  <package id="Microsoft.Extensions.WebEncoders" version="1.0.0" targetFramework="net46" />
  <package id="Microsoft.IdentityModel.Protocol.Extensions" version="1.0.2.206221351" targetFramework="net46" />
  <package id="Microsoft.jQuery.Unobtrusive.Ajax" version="3.2.3" targetFramework="net451" />
  <package id="Microsoft.jQuery.Unobtrusive.Validation" version="3.0.0" targetFramework="net451" />
  <package id="Microsoft.Net.Http" version="2.2.29" targetFramework="net451" />
  <package id="Microsoft.Net.Http.Headers" version="1.0.0" targetFramework="net46" />
  <package id="Microsoft.Owin" version="3.1.0" targetFramework="net46" />
  <package id="Microsoft.Owin.Host.SystemWeb" version="3.1.0" targetFramework="net46" />
  <package id="Microsoft.Owin.Security" version="3.1.0" targetFramework="net46" />
  <package id="Microsoft.Owin.Security.Cookies" version="3.1.0" targetFramework="net46" />
  <package id="Microsoft.Owin.Security.OAuth" version="3.1.0" targetFramework="net46" />
  <package id="Microsoft.Owin.Security.OpenIdConnect" version="3.1.0" targetFramework="net46" />
  <package id="Microsoft.Web.Infrastructure" version="1.0.0.0" targetFramework="net45" />
  <package id="Microsoft.Web.RedisSessionStateProvider" version="3.0.2" targetFramework="net46" />
  <package id="MicrosoftAjax" version="4.0.20526.0" targetFramework="net46" />
  <package id="MicrosoftMvcAjax.Mvc5" version="5.0" targetFramework="net46" />
  <package id="Modernizr" version="2.6.2" targetFramework="net46" />
  <package id="NC-OS-SessionStateProvider" version="4.4.0.0" targetFramework="net46" />
  <package id="Newtonsoft.Json" version="10.0.3" targetFramework="net46" />
  <package id="Owin" version="1.0" targetFramework="net46" />
  <package id="PerfIt" version="0.1.5" targetFramework="net45" />
  <package id="StackExchange.Redis.StrongName" version="1.2.6" targetFramework="net46" />
  <package id="System.AppContext" version="4.1.0" targetFramework="net46" />
  <package id="System.Buffers" version="4.0.0" targetFramework="net46" />
  <package id="System.Collections" version="4.0.11" targetFramework="net46" />
  <package id="System.Collections.Concurrent" version="4.0.12" targetFramework="net46" />
  <package id="System.Collections.Immutable" version="1.2.0" targetFramework="net46" />
  <package id="System.ComponentModel" version="4.0.1" targetFramework="net46" />
  <package id="System.ComponentModel.Primitives" version="4.1.0" targetFramework="net46" />
  <package id="System.ComponentModel.TypeConverter" version="4.1.0" targetFramework="net46" />
  <package id="System.Console" version="4.0.0" targetFramework="net46" />
  <package id="System.Data.Common" version="4.1.0" targetFramework="net46" />
  <package id="System.Data.SqlClient" version="4.1.0" targetFramework="net46" />
  <package id="System.Diagnostics.Contracts" version="4.0.1" targetFramework="net46" />
  <package id="System.Diagnostics.Debug" version="4.0.11" targetFramework="net46" />
  <package id="System.Diagnostics.DiagnosticSource" version="4.0.0" targetFramework="net46" />
  <package id="System.Diagnostics.FileVersionInfo" version="4.0.0" targetFramework="net46" />
  <package id="System.Diagnostics.StackTrace" version="4.0.1" targetFramework="net46" />
  <package id="System.Diagnostics.Tools" version="4.0.1" targetFramework="net46" />
  <package id="System.Dynamic.Runtime" version="4.0.11" targetFramework="net46" />
  <package id="System.Globalization" version="4.0.11" targetFramework="net46" />
  <package id="System.IdentityModel.Tokens.Jwt" version="4.0.2.206221351" targetFramework="net46" />
  <package id="System.IdentityModel.Tokens.ValidatingIssuerNameRegistry" version="4.5.1" targetFramework="net45" />
  <package id="System.IO" version="4.1.0" targetFramework="net46" />
  <package id="System.IO.FileSystem" version="4.0.1" targetFramework="net46" />
  <package id="System.IO.FileSystem.Primitives" version="4.0.1" targetFramework="net46" />
  <package id="System.Linq" version="4.1.0" targetFramework="net46" />
  <package id="System.Linq.Expressions" version="4.1.0" targetFramework="net46" />
  <package id="System.Linq.Queryable" version="4.0.0" targetFramework="net46" />
  <package id="System.Net.Http" version="4.3.2" targetFramework="net46" />
  <package id="System.Reflection" version="4.1.0" targetFramework="net46" />
  <package id="System.Reflection.Extensions" version="4.0.1" targetFramework="net46" />
  <package id="System.Reflection.Metadata" version="1.3.0" targetFramework="net46" />
  <package id="System.Reflection.Primitives" version="4.0.1" targetFramework="net46" />
  <package id="System.Resources.ResourceManager" version="4.0.1" targetFramework="net46" />
  <package id="System.Runtime" version="4.1.0" targetFramework="net46" />
  <package id="System.Runtime.Extensions" version="4.1.0" targetFramework="net46" />
  <package id="System.Runtime.Handles" version="4.0.1" targetFramework="net46" />
  <package id="System.Runtime.InteropServices" version="4.1.0" targetFramework="net46" />
  <package id="System.Runtime.Numerics" version="4.0.1" targetFramework="net46" />
  <package id="System.Runtime.Serialization.Primitives" version="4.1.1" targetFramework="net46" />
  <package id="System.Security.Cryptography.Algorithms" version="4.3.0" targetFramework="net46" />
  <package id="System.Security.Cryptography.Encoding" version="4.3.0" targetFramework="net46" />
  <package id="System.Security.Cryptography.Primitives" version="4.3.0" targetFramework="net46" />
  <package id="System.Security.Cryptography.X509Certificates" version="4.3.0" targetFramework="net46" />
  <package id="System.Text.Encoding" version="4.0.11" targetFramework="net46" />
  <package id="System.Text.Encoding.CodePages" version="4.0.1" targetFramework="net46" />
  <package id="System.Text.Encoding.Extensions" version="4.0.11" targetFramework="net46" />
  <package id="System.Text.Encodings.Web" version="4.0.0" targetFramework="net46" />
  <package id="System.Threading" version="4.0.11" targetFramework="net46" />
  <package id="System.Threading.Tasks" version="4.0.11" targetFramework="net46" />
  <package id="System.Threading.Tasks.Parallel" version="4.0.1" targetFramework="net46" />
  <package id="System.Threading.Thread" version="4.0.0" targetFramework="net46" />
  <package id="System.Xml.ReaderWriter" version="4.0.11" targetFramework="net46" />
  <package id="System.Xml.XDocument" version="4.0.11" targetFramework="net46" />
  <package id="System.Xml.XmlDocument" version="4.0.1" targetFramework="net46" />
  <package id="System.Xml.XPath" version="4.0.1" targetFramework="net46" />
  <package id="System.Xml.XPath.XDocument" version="4.0.1" targetFramework="net46" />
  <package id="Thinktecture.IdentityModel" version="3.6.1" targetFramework="net451" />
  <package id="Thinktecture.IdentityModel.Client" version="4.0.1" targetFramework="net46" />
  <package id="Unity" version="4.0.1" targetFramework="net46" />
  <package id="Unity.AspNet.WebApi" version="4.0.1" targetFramework="net46" />
  <package id="Unity.Mvc" version="4.0.1" targetFramework="net46" />
  <package id="Unity.WebAPI" version="5.2.3" targetFramework="net46" />
  <package id="WebActivatorEx" version="2.0.5" targetFramework="net451" />
  <package id="WebConfigTransformRunner" version="1.0.0.1" targetFramework="net46" />
  <package id="WebGrease" version="1.6.0" targetFramework="net451" />
</packages>

I guess, something about this set of dependencies, introduces an irreconcilable dependency issue when migrating.

Beyond that... it's a mystery.

@GSPP GSPP mentioned this issue Oct 15, 2018
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GSPP commented Oct 15, 2018 •
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I'm tracking related issues and information in a list. They are related to System.Net.Http, System.Runtime, System.IO, System.ValueTuple, System.Buffers and others.

https://github.com/dotnet/corefx/issues/32587
https://github.com/dotnet/corefx/issues/32561
#481
#567
#558
#887
#891
https://github.com/dotnet/corefx/issues/32610
https://github.com/dotnet/corefx/issues/30642
https://github.com/dotnet/corefx/issues/32757
#895
#877
#521
#295
#476
#184
#936
#941
https://github.com/dotnet/corefx/issues/33148
NuGet/Home#7440
https://github.com/dotnet/corefx/issues/31532
https://github.com/dotnet/corefx/issues/22781
https://github.com/dotnet/corefx/issues/23306
https://github.com/dotnet/corefx/issues/29622
https://github.com/dotnet/corefx/issues/9846
https://github.com/dotnet/corefx/issues/17522
https://github.com/dotnet/corefx/issues/25773

All of these have the same very few underlying issues.

.NET 4.7.2 helps with some but not all of these. You can look at my comments on some of these issues for some ideas on how to work around those problems. I also have a central list of ideas to try.

This was referenced Oct 15, 2018
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This was referenced Oct 24, 2018
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@GSPP GSPP mentioned this issue Nov 20, 2018
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@terrajobst terrajobst added this to the .NET Standard 2.1 milestone Mar 13, 2019
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wtgodbe commented May 30, 2019

Closing as dupe of #936

@wtgodbe wtgodbe closed this as completed May 30, 2019
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