How to resolve Detected package downgrade warnings

Question

I've been hitting my head against a brick wall with a very annoying problem. If anyone has any ideas that would be great! I'm in visual studio 2017 with a .net core 1.1 asp.net website. I'm using ravendb. The problem is that I'm getting 4 build warnings which cause the deployment to azure to fail. The warnings are:

Warning Detected package downgrade: RavenDB.Client from 3.5.35130-Unstable to 3.5.4-patch-35202 ApiHubNunitTests (>= 1.0.0) -> ApiHub (>= 1.0.0) -> RavenDB.DependencyInjection (>= 1.0.0) -> RavenDB.Client (>= 3.5.35130-Unstable) ApiHubNunitTests (>= 1.0.0) -> ApiHub (>= 1.0.0) -> RavenDB.Client (>= 3.5.4-patch-35202)

Warning Detected package downgrade: RavenDB.Client from 3.5.35130-Unstable to 3.5.4-patch-35202 ApiHub (>= 1.0.0) -> RavenDB.DependencyInjection (>= 1.0.0) -> RavenDB.Client (>= 3.5.35130-Unstable) ApiHub (>= 1.0.0) -> RavenDB.Client (>= 3.5.4-patch-35202)

Warning MSB3277 Found conflicts between different versions of the same dependent assembly that could not be resolved. These reference conflicts are listed in the build log when log verbosity is set to detailed. BlueSkyApiHub C:\Program Files (x86)\Microsoft Visual Studio\2017\Community\MSBuild\15.0\Bin\Microsoft.Common.CurrentVersion.targets 1964

Warning MSB3277 Found conflicts between different versions of the same dependent assembly that could not be resolved. These reference conflicts are listed in the build log when log verbosity is set to detailed. ApiHubNunitTests C:\Program Files (x86)\Microsoft Visual Studio\2017\Community\MSBuild\15.0\Bin\Microsoft.Common.CurrentVersion.targets 1964 Build

I've turned on the detailed build output and found this:

There was a conflict between "System.Net.Primitives, Version=4.0.10.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a" and "System.Net.Primitives, Version=4.0.11.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a".

and this

There was a conflict between "Raven.Client.Lightweight, Version=3.5.4.0, Culture=neutral, PublicKeyToken=null" and "Raven.Client.Lightweight, Version=3.5.3.0, Culture=neutral, PublicKeyToken=null".

and this

There was a conflict between "Raven.Client.UniqueConstraints, Version=3.5.4.0, Culture=neutral, PublicKeyToken=null" and "Raven.Client.UniqueConstraints, Version=3.5.3.0, Culture=neutral, PublicKeyToken=null".

There are a few more all related to ravendb.

I'm not sure where to go now? Any ideas?

EDIT: Here are the .csproj files for both projects

<Project Sdk="Microsoft.NET.Sdk.Web">
  <PropertyGroup>
    <TargetFramework>netcoreapp1.1</TargetFramework>
    <PackageTargetFallback>portable-net45+win8</PackageTargetFallback>
  </PropertyGroup>

  <ItemGroup>
    <Folder Include="wwwroot\" />
  </ItemGroup>
  <ItemGroup>
    <PackageReference Include="BCrypt.Net-Core" Version="1.4.0" />
    <PackageReference Include="Flurl.Http" Version="1.2.0-pre" />
    <PackageReference Include="Maqduni.AspNetCore.Identity.RavenDb" Version="1.3.34" />
    <PackageReference Include="Microsoft.ApplicationInsights.AspNetCore" Version="2.1.1" />
    <PackageReference Include="Microsoft.AspNetCore" Version="1.1.2" />
    <PackageReference Include="Microsoft.AspNetCore.Authentication.JwtBearer" Version="1.1.2" />
    <PackageReference Include="Microsoft.AspNetCore.Mvc" Version="1.1.3" />
    <PackageReference Include="Microsoft.AspNetCore.StaticFiles" Version="1.1.2" />
    <PackageReference Include="Microsoft.EntityFrameworkCore.Design" Version="1.1.2" />
    <PackageReference Include="Microsoft.Extensions.Logging.Debug" Version="2.0.0-preview2-final" />
    <PackageReference Include="Microsoft.VisualStudio.Web.BrowserLink" Version="1.1.2" />
    <PackageReference Include="Newtonsoft.Json" Version="10.0.3" />
    <PackageReference Include="NodaTime" Version="2.2.0" />
    <PackageReference Include="RavenDB.Client" Version="3.5.4-patch-35202" />
    <PackageReference Include="RavenDB.Client.UniqueConstraints" Version="3.5.4-patch-35202" />
    <PackageReference Include="RavenDB.DependencyInjection" Version="1.0.0" />
    <PackageReference Include="System.IdentityModel.Tokens.Jwt" Version="5.1.4" />
  </ItemGroup>
  <ItemGroup>
    <DotNetCliToolReference Include="Microsoft.VisualStudio.Web.CodeGeneration.Tools" Version="1.0.0-msbuild3-final" />
  </ItemGroup>
  <ItemGroup>
    <Content Update="appsettings.json">
      <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
    </Content>
  </ItemGroup>

</Project>

and for the other project:

<Project Sdk="Microsoft.NET.Sdk">
  <PropertyGroup>
    <TargetFramework>netcoreapp1.1</TargetFramework>
  </PropertyGroup>

  <ItemGroup>
    <PackageReference Include="CompareNETObjects" Version="3.9.0" />
    <PackageReference Include="FakeItEasy" Version="4.0.0-beta001" />
    <PackageReference Include="Flurl.Http" Version="1.2.0-pre" />
    <PackageReference Include="MyTested.AspNetCore.Mvc.Universe" Version="1.1.0" />
    <PackageReference Include="Newtonsoft.Json" Version="10.0.3" />
    <PackageReference Include="NodaTime" Version="2.2.0" />
    <PackageReference Include="NUnit" Version="3.7.1" />
  </ItemGroup>

  <ItemGroup>
    <ProjectReference Include="..\BlueSkyApiHub\BlueSkyApiHub.csproj" />
  </ItemGroup>
</Project>

Answer 1

I did a fair amount of googling on this one and i tried adding various commands on the csproj file but nothing worked for me. I was upgrading my packages to .net core 2.0 and then i ran into package downgrade errors.

In the end i did the following:

1. Took a copy of my csproj to note down the exact packages and versions i was using.
2. Removed all packages from the original cs proj file.
3. Saved and confimed in side VS all of the build errors for missing packages,
4. Confirmed that the packages had been dereferenced too from the references list.
5. I manually started re-adding aspnetcore packages one by one.