古いプロジェクトをAzureにデプロイするとCould not load file or assembly System.Web.Http.WebHost

I met the same problem and I resolved it by setting CopyLocal to true for the following libs:

System.Web.Http.dll
System.Web.Http.WebHost.dll
System.Net.Http.Formatting.dll

I must to add that I use MVC4 and NET 4

answered Dec 17 '14 at 14:30 Bronek

asp.net - Could not load file or assembly System.Web.Http.WebHost after published to Azure web site - Stack Overflow

これだった。