TIPS-在.NET4 ASP.NET MVC專案安裝SignalR 2014-03-11 07:48 AM 1 9,508 目標平台為Windows Server 2003,ASP.NET MVC專案只能選擇.NET 4.0,在NuGet用關鍵字signalr找到程式包,安裝時卻出現以下錯誤: Could not install package 'Microsoft.Owin.Security 2.0.2'....