- A zkousel jsi nastavit ten Web.Config, AutomaticAppStartup nastavit na "false" ?
* Asi bych i promazal (bin/) OWIN references, NUGATE pakety a zadal + Rebuild.

<add key="owin:AutomaticAppStartup" value="false" />

-

<appSettings >
    <add key="owin:AppStartup" value="false"></add>
        </appSettings>

TiP ~Mozna bych zkusil i poupravit :

<add key="owin:AppStartup" value="WebApplication1.App_Start.Startup"/>