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Fiddler not capturing traffic from browsers

Tags:

fiddler

I've been using Fiddler for quite a while, but all of a sudden it no longer captures internet traffic. I'm on Chrome 29 and Fiddler v4.4.5.1. I've checked all filters and rules and nothing is on. I've deleted my rules file, turned on and off capture traffic, and a few other things with no luck. I even uninstalled and re-installed Fiddler to see if that would help but to no avail.

What am I missing?

[Follow Up]:

  • Troubleshoot Filters has no effect.
  • I see no activity in the log tab beyond "Fiddler Running..."
  • I've tried multiple browsers and none show internet traffic in fiddler
  • http://localhost.fiddler:8888/ does not work
  • http://127.0.0.1:8888 works and shows the fiddler echo service.
like image 909
joeldow Avatar asked Sep 05 '13 19:09

joeldow


People also ask

Why is Fiddler not capturing traffic?

It seems to be due to a proxy setting, where for the loopback address no proxy is being used, which makes Fiddler unable to inspect the traffic. I've temporarily solved this by only requesting from 127.0. 0.1, or changing my hosts file to use another alias other than "localhost".

Does Fiddler capture non browser traffic?

HTTP traffic from a Java client can be captured in a Fiddler capture, but not from a web browser capture. Due to this, depending on the situation and problem, one may be more preferable than the other.

How do I connect my Fiddler to my browser?

Click Tools > Monitor with Fiddler > Use Fiddler automatically to configure with FiddlerHook, or. Click Tools > Options > Advanced > Network > Settings > Use System Proxy Settings.


1 Answers

I had the same problem, but it turned out to be a chrome extension called hola (or Proxy SwitchySharp), that messed with the proxy settings. Removing Hola fixed the problem

like image 85
Claus Avatar answered Sep 20 '22 23:09

Claus