The Common scenario that one of student got was during creating signalr project from empty web project. so i would like to spread it online with others. you may have see Error Screen as shown in below Screenshots -
Error : No assembly found containing an OwinStartupAttribute.
No assembly found containing a Startup or [AssemblyName].Starup class.
|No Assembly found containing an OwinStartupAttribute Error|
line of Code to Add is written below and also shown written in Screenshot below
<add key="owin:AutomaticAppStartup" value="false" />