Problems related to Microsoft HTTP Client Libraries v2.1.10 NuGet update

Question

Note: This question was totally rewritten several days after it was originally posted.

I have an ASP.NET MVC app developed in VS 2012, deployed to Azure. The original projects were created from the ASP.NET MVC 4 project template.

NuGet recently started showing a whole slew of updated packages from Microsoft. One of those updates, Microsoft HTTP Client Libraries v2.1.10, causes serious problems when it is installed.

1. It installs MicrosoftBcl.Build, which is not compatible with my Azure project (see this SO question for the problem and its solution).

2. It causes a whole slew of "incompatible DLL" problems (see below).

This raises several burning questions:

1. My MVC app is just a website. It just runs in a web browser. Do I need this package at all? (E.g., is it used by template code, which would break, possibly subtly, if I remove the package?)

2. According to the Project Site (http://blogs.msdn.com/b/bclteam/p/httpclient.aspx), there are a couple of newer (albeit beta) versions of this product. I assume I'd see them if I told NuGet to show me non-released versions. Do these versions fix the problems described above?

Here are the warnings I get when I build the solution after installing the updated NuGet package...

1>------ Build started: Project: Ruby, Configuration: Release Any CPU ------
1>  All packages listed in packages.config are already installed.
1>  No way to resolve conflict between "System.Web.Mvc, Version=3.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" and "System.Web.Mvc, Version=1.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35". Choosing "System.Web.Mvc, Version=3.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" arbitrarily.
1>  Consider app.config remapping of assembly "DotNetOpenAuth.AspNet, Culture=neutral, PublicKeyToken=2780ccd10d57b246" from Version "4.0.0.0" [] to Version "4.3.0.0" [C:\Users\Robert\Documents\SBSoftware\SCM\Ruby\packages\DotNetOpenAuth.AspNet.4.3.0.13117\lib\net45-full\DotNetOpenAuth.AspNet.dll] to solve conflict and get rid of warning.
1>  Consider app.config remapping of assembly "System.Web.Mvc, Culture=neutral, PublicKeyToken=31bf3856ad364e35" from Version "3.0.0.0" [C:\Program Files (x86)\Microsoft ASP.NET\ASP.NET MVC 3\Assemblies\System.Web.Mvc.dll] to Version "4.0.0.0" [C:\Users\Robert\Documents\SBSoftware\SCM\Ruby\packages\Microsoft.AspNet.Mvc.4.0.30506.0\lib\net40\System.Web.Mvc.dll] to solve conflict and get rid of warning.
1>  Consider app.config remapping of assembly "System.Web.Razor, Culture=neutral, PublicKeyToken=31bf3856ad364e35" from Version "1.0.0.0" [C:\Program Files (x86)\Microsoft ASP.NET\ASP.NET Web Pages\v1.0\Assemblies\System.Web.Razor.dll] to Version "2.0.0.0" [C:\Users\Robert\Documents\SBSoftware\SCM\Ruby\packages\Microsoft.AspNet.Razor.2.0.30506.0\lib\net40\System.Web.Razor.dll] to solve conflict and get rid of warning.
1>  Consider app.config remapping of assembly "WebGrease, Culture=neutral, PublicKeyToken=31bf3856ad364e35" from Version "1.0.0.0" [] to Version "1.3.0.0" [C:\Users\Robert\Documents\SBSoftware\SCM\Ruby\packages\WebGrease.1.3.0\lib\WebGrease.dll] to solve conflict and get rid of warning.
1>  Consider app.config remapping of assembly "System.Web.WebPages.Razor, Culture=neutral, PublicKeyToken=31bf3856ad364e35" from Version "1.0.0.0" [C:\Program Files (x86)\Microsoft ASP.NET\ASP.NET Web Pages\v1.0\Assemblies\System.Web.WebPages.Razor.dll] to Version "2.0.0.0" [C:\Users\Robert\Documents\SBSoftware\SCM\Ruby\packages\Microsoft.AspNet.WebPages.2.0.30506.0\lib\net40\System.Web.WebPages.Razor.dll] to solve conflict and get rid of warning.
1>  Consider app.config remapping of assembly "Microsoft.Data.OData, Culture=neutral, PublicKeyToken=31bf3856ad364e35" from Version "5.2.0.0" [] to Version "5.5.0.0" [C:\Users\Robert\Documents\SBSoftware\SCM\Ruby\packages\Microsoft.Data.OData.5.5.0\lib\net40\Microsoft.Data.OData.dll] to solve conflict and get rid of warning.
1>  Consider app.config remapping of assembly "System.Web.WebPages, Culture=neutral, PublicKeyToken=31bf3856ad364e35" from Version "1.0.0.0" [C:\Program Files (x86)\Microsoft ASP.NET\ASP.NET Web Pages\v1.0\Assemblies\System.Web.WebPages.dll] to Version "2.0.0.0" [C:\Users\Robert\Documents\SBSoftware\SCM\Ruby\packages\Microsoft.AspNet.WebPages.2.0.30506.0\lib\net40\System.Web.WebPages.dll] to solve conflict and get rid of warning.
1>  Consider app.config remapping of assembly "DotNetOpenAuth.Core, Culture=neutral, PublicKeyToken=2780ccd10d57b246" from Version "4.0.0.0" [] to Version "4.3.0.0" [C:\Users\Robert\Documents\SBSoftware\SCM\Ruby\packages\DotNetOpenAuth.Core.4.3.0.13117\lib\net45-full\DotNetOpenAuth.Core.dll] to solve conflict and get rid of warning.
1>  Consider app.config remapping of assembly "System.Web.WebPages.Deployment, Culture=neutral, PublicKeyToken=31bf3856ad364e35" from Version "1.0.0.0" [C:\Program Files (x86)\Microsoft ASP.NET\ASP.NET Web Pages\v1.0\Assemblies\System.Web.WebPages.Deployment.dll] to Version "2.0.0.0" [C:\Users\Robert\Documents\SBSoftware\SCM\Ruby\packages\Microsoft.AspNet.WebPages.2.0.30506.0\lib\net40\System.Web.WebPages.Deployment.dll] to solve conflict and get rid of warning.
1>C:\Windows\Microsoft.NET\Framework\v4.0.30319\Microsoft.Common.targets(1605,5): warning MSB3247: Found conflicts between different versions of the same dependent assembly.
1>  Ruby -> C:\Users\Robert\Documents\SBSoftware\SCM\Ruby\Ruby\bin\Ruby.dll
2>------ Build started: Project: Ruby.Azure, Configuration: Release Any CPU ------
3>------ Publish started: Project: Ruby.Azure, Configuration: Release Any CPU ------
3>C:\Users\Robert\Documents\SBSoftware\SCM\Ruby\packages\Microsoft.Bcl.Build.1.0.7\tools\Microsoft.Bcl.Build.targets(220,5): warning : All projects referencing Ruby.csproj must install nuget package Microsoft.Bcl.Build.
3>      No way to resolve conflict between "System.Web.Mvc, Version=3.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" and "System.Web.Mvc, Version=1.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35". Choosing "System.Web.Mvc, Version=3.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" arbitrarily.
3>      Consider app.config remapping of assembly "DotNetOpenAuth.AspNet, Culture=neutral, PublicKeyToken=2780ccd10d57b246" from Version "4.0.0.0" [] to Version "4.3.0.0" [C:\Users\Robert\Documents\SBSoftware\SCM\Ruby\packages\DotNetOpenAuth.AspNet.4.3.0.13117\lib\net45-full\DotNetOpenAuth.AspNet.dll] to solve conflict and get rid of warning.
3>      Consider app.config remapping of assembly "System.Web.Mvc, Culture=neutral, PublicKeyToken=31bf3856ad364e35" from Version "3.0.0.0" [C:\Program Files (x86)\Microsoft ASP.NET\ASP.NET MVC 3\Assemblies\System.Web.Mvc.dll] to Version "4.0.0.0" [C:\Users\Robert\Documents\SBSoftware\SCM\Ruby\packages\Microsoft.AspNet.Mvc.4.0.30506.0\lib\net40\System.Web.Mvc.dll] to solve conflict and get rid of warning.
3>      Consider app.config remapping of assembly "System.Web.Razor, Culture=neutral, PublicKeyToken=31bf3856ad364e35" from Version "1.0.0.0" [C:\Program Files (x86)\Microsoft ASP.NET\ASP.NET Web Pages\v1.0\Assemblies\System.Web.Razor.dll] to Version "2.0.0.0" [C:\Users\Robert\Documents\SBSoftware\SCM\Ruby\packages\Microsoft.AspNet.Razor.2.0.30506.0\lib\net40\System.Web.Razor.dll] to solve conflict and get rid of warning.
3>      Consider app.config remapping of assembly "WebGrease, Culture=neutral, PublicKeyToken=31bf3856ad364e35" from Version "1.0.0.0" [] to Version "1.3.0.0" [C:\Users\Robert\Documents\SBSoftware\SCM\Ruby\packages\WebGrease.1.3.0\lib\WebGrease.dll] to solve conflict and get rid of warning.
3>      Consider app.config remapping of assembly "System.Web.WebPages.Razor, Culture=neutral, PublicKeyToken=31bf3856ad364e35" from Version "1.0.0.0" [C:\Program Files (x86)\Microsoft ASP.NET\ASP.NET Web Pages\v1.0\Assemblies\System.Web.WebPages.Razor.dll] to Version "2.0.0.0" [C:\Users\Robert\Documents\SBSoftware\SCM\Ruby\packages\Microsoft.AspNet.WebPages.2.0.30506.0\lib\net40\System.Web.WebPages.Razor.dll] to solve conflict and get rid of warning.
3>      Consider app.config remapping of assembly "Microsoft.Data.OData, Culture=neutral, PublicKeyToken=31bf3856ad364e35" from Version "5.2.0.0" [] to Version "5.5.0.0" [C:\Users\Robert\Documents\SBSoftware\SCM\Ruby\packages\Microsoft.Data.OData.5.5.0\lib\net40\Microsoft.Data.OData.dll] to solve conflict and get rid of warning.
3>      Consider app.config remapping of assembly "System.Web.WebPages, Culture=neutral, PublicKeyToken=31bf3856ad364e35" from Version "1.0.0.0" [C:\Program Files (x86)\Microsoft ASP.NET\ASP.NET Web Pages\v1.0\Assemblies\System.Web.WebPages.dll] to Version "2.0.0.0" [C:\Users\Robert\Documents\SBSoftware\SCM\Ruby\packages\Microsoft.AspNet.WebPages.2.0.30506.0\lib\net40\System.Web.WebPages.dll] to solve conflict and get rid of warning.
3>      Consider app.config remapping of assembly "DotNetOpenAuth.Core, Culture=neutral, PublicKeyToken=2780ccd10d57b246" from Version "4.0.0.0" [] to Version "4.3.0.0" [C:\Users\Robert\Documents\SBSoftware\SCM\Ruby\packages\DotNetOpenAuth.Core.4.3.0.13117\lib\net45-full\DotNetOpenAuth.Core.dll] to solve conflict and get rid of warning.
3>      Consider app.config remapping of assembly "System.Web.WebPages.Deployment, Culture=neutral, PublicKeyToken=31bf3856ad364e35" from Version "1.0.0.0" [C:\Program Files (x86)\Microsoft ASP.NET\ASP.NET Web Pages\v1.0\Assemblies\System.Web.WebPages.Deployment.dll] to Version "2.0.0.0" [C:\Users\Robert\Documents\SBSoftware\SCM\Ruby\packages\Microsoft.AspNet.WebPages.2.0.30506.0\lib\net40\System.Web.WebPages.Deployment.dll] to solve conflict and get rid of warning.
3>C:\Windows\Microsoft.NET\Framework\v4.0.30319\Microsoft.Common.targets(1605,5): warning MSB3247: Found conflicts between different versions of the same dependent assembly.
3>      Transformed Web.config using C:\Users\Robert\Documents\SBSoftware\SCM\Ruby\Ruby\Web.Release.config into obj\Release\TransformWebConfig\transformed\Web.config.
3>Ruby(0,0): warning WAT153: The web project 'Ruby' is dependent on the following MVC assembly: C:\Program Files (x86)\Microsoft ASP.NET\ASP.NET MVC 3\Assemblies\System.Web.Mvc.dll. MVC assemblies must be added to the package or installed on the virtual machine for your web role. For more details about this, see the following help page: http://go.microsoft.com/fwlink/?LinkId=218227.
3>Ruby(0,0): warning WAT153: The web project 'Ruby' is dependent on the following MVC assembly: C:\Program Files (x86)\Microsoft ASP.NET\ASP.NET Web Pages\v1.0\Assemblies\System.Web.Razor.dll. MVC assemblies must be added to the package or installed on the virtual machine for your web role. For more details about this, see the following help page: http://go.microsoft.com/fwlink/?LinkId=218227.
3>Ruby(0,0): warning WAT153: The web project 'Ruby' is dependent on the following MVC assembly: C:\Program Files (x86)\Microsoft ASP.NET\ASP.NET Web Pages\v1.0\Assemblies\System.Web.WebPages.Razor.dll. MVC assemblies must be added to the package or installed on the virtual machine for your web role. For more details about this, see the following help page: http://go.microsoft.com/fwlink/?LinkId=218227.
3>Ruby(0,0): warning WAT153: The web project 'Ruby' is dependent on the following MVC assembly: C:\Program Files (x86)\Microsoft ASP.NET\ASP.NET Web Pages\v1.0\Assemblies\System.Web.WebPages.dll. MVC assemblies must be added to the package or installed on the virtual machine for your web role. For more details about this, see the following help page: http://go.microsoft.com/fwlink/?LinkId=218227.
3>Ruby(0,0): warning WAT153: The web project 'Ruby' is dependent on the following MVC assembly: C:\Program Files (x86)\Microsoft ASP.NET\ASP.NET Web Pages\v1.0\Assemblies\System.Web.WebPages.Deployment.dll. MVC assemblies must be added to the package or installed on the virtual machine for your web role. For more details about this, see the following help page: http://go.microsoft.com/fwlink/?LinkId=218227.

Answer 1

You can use binding redirects in your web.config file to solve issues.

For example, for line:

Consider app.config remapping of assembly "DotNetOpenAuth.AspNet, Culture=neutral, PublicKeyToken=2780ccd10d57b246" from Version "4.0.0.0" [] to Version "4.3.0.0"

Add in Web.config:

<configuration>
   <runtime>
      <assemblyBinding xmlns="urn:schemas-microsoft-com:asm.v1">
         <dependentAssembly>
            <assemblyIdentity name="DotNetOpenAuth.AspNet"
                              publicKeyToken="2780ccd10d57b246"
                              culture="neutral" />
            <bindingRedirect oldVersion="1.0.0.0-4.3.0.0"
                             newVersion="4.3.0.0"/>
         </dependentAssembly>
      </assemblyBinding>
   </runtime>
</configuration>

and so on... For each dll that creates exception add additional dependentAssembly node.

Answer 2

One situation which causes this error is running the Azure package oder publish commands without having done a clean rebuild for the same configuration (e.g. Release) before.

This fixed it for me:

1. Reinstall the WindowsAzure.Storage NuGet package by running the following command on the NuGet Package Manager Console:

   Update-Package –reinstall WindowsAzure.Storage
   

2. Rebuild the MVC web application project (Debug and Release).

If this does not help you could set the "MSBuild project build output verbosity" under TOOLS -> Options -> "Projects and Solutions" -> "Build and Run" to "Diagnostic" and check what causes the Assembly conflict (e.g. look for "Project file item includes which caused reference").

Answer 3

You need to update/create an app.config file with the redirects as mentioned here:

https://cpaterson.wordpress.com/2014/03/28/found-conflicts-between-different-versions-of-assembly-consider-app-config-remapping-of-assembly/