title: How to get rid of the MSB3247 (assembly version conflict) warning in an MVC3 app?
body: <p>I have an MVC3 app which depends on the DotNetOpenAuth lib, which references MVC1. When I installed the DotNetOpenAuth NuGet package it added an assembly binding redirect to my web.config. I uncommented it, but nothing changed.</p>
  
  <p>After some searching I found that the reason for this is usually a typo, however I doubt this applies to me, I checked the config at least a dozen times for typos.</p>
  
  <p>I stripped down my web.config to the following:</p>
  
  <pre><code>&lt;?xml version="1.0" encoding="utf-8" ?&gt;
  &lt;configuration&gt;
      &lt;runtime&gt;
      &lt;assemblyBinding xmlns="urn:schemas-microsoft-com:asm.v1"&gt;
              &lt;dependentAssembly&gt;
                  &lt;assemblyIdentity name="System.Web.Mvc" publicKeyToken="31bf3856ad364e35" /&gt;
                  &lt;bindingRedirect oldVersion="1.0.0.0-3.0.0.0" newVersion="3.0.0.0" /&gt;
              &lt;/dependentAssembly&gt;
      &lt;/assemblyBinding&gt;
    &lt;/runtime&gt;
  &lt;/configuration&gt;
  </code></pre>
  
  <p>During build I get the following warning:</p>
  
  <pre><code>Consider app.config remapping of assembly "System.Web.Mvc, Culture=neutral, PublicKeyToken=31bf3856ad364e35" from Version "1.0.0.0" [] to Version "3.0.0.0" [C:\Program Files (x86)\Microsoft ASP.NET\ASP.NET MVC 3\Assemblies\System.Web.Mvc.dll] to solve conflict and get rid of warning.
  C:\Windows\Microsoft.NET\Framework\v4.0.30319\Microsoft.Common.targets(1578,5): warning MSB3247: Found conflicts between different versions of the same dependent assembly.
  </code></pre>
  
  <p>I have tried a lot of different combinations (eg. adding the culture="neutral" attribute) in my web.config with no luck, and I've run out of ideas. Any suggestions?</p>
  
  <p><strong>Update</strong>
  My ~/Views/web.config is <a href="http://pastebin.com/4SCTzAiT" rel="nofollow">here</a></p>