I have a HTTPS Post that is failing with either:
  - The underlying connection was closed: An unexpected error occurred on a send, or
  - The request was aborted: Could not create SSL/TLS secure channel

When  capturing traffic with fiddler the problem goes away.  I've read the advice from Eric here:
  - http://blogs.telerik.com/fiddler/posts/13-02-28/help!-running-fiddler-fixes-my-app-
  - http://stackoverflow.com/questions/21481682/httpwebrequest-the-underlying-connection-was-closed-the-connection-was-closed

The server I'm connecting to (Chase bank ofx server) isn't intermittently letting me connect, so retrying isn't an option.

I'm wondering if there is a way to build/emulate the fiddler proxy in C# to keep the client connection open and get around the .Net 4 "bug" Eric mentions in the Stack Overflow post?  Or is there anything I can do in my firewall to keep the connection open?

I'd be grateful for any assistance getting started.

Hello. (win 10 doesnt work on my pc)

 

I'm wondering if fiddler is available for a WIN 8 pc ? Whenever i try to download it i only get options for NET downloads.

Hi,

 

I've recently been trying to get Fiddler to pick up traffic for my new app, hower it's failing!

Wireshark can pick the traffic up completely fine.

 

I am trying to pick up http traffic from port 8180, i attached pcap of the packets its failing to obtain.

 

Yes, i am using latest version, no filters/rules is enabled. Yes, it picks up other traffic.

 

Packet that it fails: https://www.sendspace.com/file/nf7077

People seem to be bypassing my authentication system using this and i am wondering if there's a way to detect it being used...I've tried

if (Process.GetProcessesByName("fiddler").Length != 0)
        {
            MessageBox.Show("Internal Error");
            Close();
        }
But it doesn't seem to detect it....if anyone could help that would be GREAT..Thx..!B

i have an old version of a game called Minecraft, that uses a .saz file to make sounds work (because the url that originally stored the sounds is gone now). inside the saz file it has 3 automatic responses that respond with "Parkways-Indev.saz#000[number]_s.txt". my question is, how do i access those text files? they don't exist in the folder and i cant find an option in fiddler.

People seem to be bypassing my authentication system using this and i am wondering if there's a way to detect it being used...I've tried

 

if (Process.GetProcessesByName("fiddler").Length != 0)
        {
            MessageBox.Show("Internal Error");
   Close();
        }

 

I installed Fiddler 4 to test a connection problem with a webservice.  This was the suggestion of the webservice provider.  After I captured the logs they needed, I uninstalled it because I found I was getting some errors and warning connecting to various websites unrelated to the project. 

We got the webservice problem fixed but I discovered my netbeans project will not connect without Fiddler running.  Any idea how I can separate these?

Thanks,

Chris

Hi . Traffic of some apps like PlayStore or the game Marvel Contest of Champions can't be capured through fiddler cause those apps don't load at all when they run through a proxy. They say that internet connection doesn't work. Ho do I fix this issue?

Dear Gurus,

I am totally new to Fiddler, and got application error on IIS. client send me fiddler report with error.

Please help me, how can i find the error and solution from FIDDLER.

Thanks

Malik Adeel Imtiaz

I have some internal and external sites that I cannot access if I don't enable Fiddler (and start capturing), using IE and Chrome. I can access them via Firefox though without any issue, with/without Fiddler enabled. In our environment there is no proxy enabled for internet access, so the only one will be Fiddler when activated on my machine. I am not sure where the issue is, but it seems there is something wrong in the registry.  I obviously don't want to be running Fiddler all the time!

Other users in the same environment (no Fiddler) do not have this issue with any browser. So it is definitely only on my machine.