To enable CORS:

a) Through code

		Install-Package Microsoft.AspNet.WebApi.Cors

		var cors = new EnableCorsAttribute("URL OR *", "*", "*");
        config.EnableCors(cors);

		OR:

		 private static void EnableCors(HttpConfiguration config)
		{
			var corsUrls = ConfigurationManager.AppSettings["CorsUrlsConcatinated"].ToString();
			// Note: seems like seeting corsUrls to "http://localhost:16980" does not work. Gets blocked by
			// chrome ??? - some bug but * works!
			// But works for the IE
			var cors = new EnableCorsAttribute(corsUrls, "*", "*");
			config.EnableCors(cors);
		}



b) through web config

	
		<httpProtocol>
		  <customHeaders>
			<add name="Access-Control-Allow-Origin" value="*" />
			<add name="Access-Control-Allow-Headers" value="Content-Type" />
			<add name="Access-Control-Allow-Methods" value="GET, POST, PUT, DELETE, OPTIONS" />
		  </customHeaders>
		</httpProtocol>