CORS POST Requests not working - OPTIONS (Bad Request) - The origin is not allowed

Question

I\'m having a lot of trouble getting a cross domain POST request to hit an Api controller in the latest beta 2 release.

Chrome (and other browsers) spit out:

Answer 1

Add this to your startup.cs file inside ConfigureOAuth

app.UseCors(Microsoft.Owin.Cors.CorsOptions.AllowAll);