My firefox version is Firefox ESR 38.4.0 and it works perfectly with Fiddler application.
But when I tried the demo application of FiddlerCore (http://www.telerik.com/fiddler..., it works with all browser except firefox. I also added on the code the following line on 267..
FiddlerApplication.Prefs.SetBoolPref("fiddler.certmaker.PreferCertEnroll", true);
But no luck. I always get like the attached file. Can you please give me link of any demo applicatoin of FiddlerCore that works with Firefox.