.NET 4 新建 webform 项目编译不通过，可能需要做如下改动。
一、根据编译错误，删除 packages.config 中相关包
二、安装包
install-package Microsoft.AspNet.Membership.OpenAuth -Version 2.0.1
install-package Microsoft.AspNet.FriendlyUrls -Version 1.0.0
install-package Microsoft.AspNet.FriendlyUrls.Core.zh-Hans -Version 1.0.0
<package id="Microsoft.AspNet.FriendlyUrls" version="1.0.0" targetFramework="net40" />
<package id="Microsoft.AspNet.FriendlyUrls.Core" version="1.0.0" targetFramework="net40" />
<package id="Microsoft.AspNet.FriendlyUrls.Core.zh-Hans" version="1.0.0" targetFramework="net40" />
install-package EntityFramework -Version 6.1.1
install-package EntityFramework.zh-Hans -Version 6.1.1
<package id="EntityFramework" version="6.1.1" targetFramework="net40" />
<package id="EntityFramework.zh-Hans" version="6.1.1" targetFramework="net40" />
install-package AspNet.ScriptManager.jQuery -Version 1.8.2
install-package AspNet.ScriptManager.jQuery.UI.Combined -Version 1.8.24
<package id="AspNet.ScriptManager.jQuery" version="1.8.2" targetFramework="net40" />
<package id="AspNet.ScriptManager.jQuery.UI.Combined" version="1.8.24" targetFramework="net40" />
install-package DotNetOpenAuth.AspNet -Version 4.1.4.12333
<package id="DotNetOpenAuth.AspNet" version="4.1.4.12333" targetFramework="net40" />
<package id="DotNetOpenAuth.Core" version="4.1.4.12333" targetFramework="net40" />
<package id="DotNetOpenAuth.OAuth.Consumer" version="4.1.4.12333" targetFramework="net40" />
<package id="DotNetOpenAuth.OAuth.Core" version="4.1.4.12333" targetFramework="net40" />
<package id="DotNetOpenAuth.OpenId.Core" version="4.1.4.12333" targetFramework="net40" />
<package id="DotNetOpenAuth.OpenId.RelyingParty" version="4.1.4.12333" targetFramework="net40" />
install-package Microsoft.AspNet.Providers -Version 2.0.0
install-package Microsoft.AspNet.Providers.Core.zh-Hans -Version 2.0.0
install-package Microsoft.AspNet.Providers.LocalDB -Version 2.0.1
<package id="Microsoft.AspNet.Providers" version="2.0.0" targetFramework="net40" />
<package id="Microsoft.AspNet.Providers.Core" version="2.0.0" targetFramework="net40" />
<package id="Microsoft.AspNet.Providers.Core.zh-Hans" version="2.0.0" targetFramework="net40" />
<package id="Microsoft.AspNet.Providers.LocalDB" version="2.0.1" targetFramework="net40" />