安装时安装Asp.Net SignalR错误

4 .net asp.net .net-4.0 nuget signalr

我正在尝试在Visual Studio 2010专业项目中安装SignalR.但是我收到了这个错误:

 Could not install package 'Microsoft.Owin.Security 2.1.0'. You are trying to install this package into a project that targets '
.NETFramework,Version=v4.0', but the package does not contain any assembly    references or content files that are compatible with that framework. F
or more information, contact the package author.
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Mag*_*ngs 12

尝试使用此命令(通过nuget包控制台)'install-package Microsoft.AspNet.SignalR -Version 1.1.3'安装不同版本的signal r.最新版本的signalr需要.net4.5