I'm trying to run Fiddler on a Win 8.1 machine.

When I run the "fix loopback mess" tool I get an exception reported.

NetIsoEnumAppContainers 0x6f4.

What is the meaning of the exception? 

We are recording a HTTP flow using Fiddler which is invoking an excel and we have macros written (SQL queries) in that excel which will interact with server and extract some data. Those are odata/Queries URLs and these URLs are failing with HTTP 408 (timeout) error message. Could you please look into it and provide some solution.

We have already tried increasing the oSession delay to 1000000 but still observing similar behavior.

Example:
 if (m_SimulateModem)
{
            // Delay sends by 300ms per KB uploaded.
            oSession["request-trickle-delay"] = "1000000";
            // Delay receives by 150ms per KB downloaded.
            oSession["response-trickle-delay"] = "1000000";
}

We are not able to record odata/Queries URL in fiddler, these URLs are failing with HTTP 408 error message.

Please help us to get resolve this issue.

Hi,

I have big issue with fiddler in Windows Server 2012 and IE 11.
When I run fiddler, it offers me WinConfig option to click from top left corner but it throws errors:
Unable to use NetIsoEnumAppContainers to get AppContainer list.
ErrorCode: 0x0
Attempting manual registry crawl; some information will be unavailable.
I am receiving error: Failed to get AppContainer info   as WinConfig action.

 

My Windows Firewall Service in services.msc is started and windows firewalls for  domain, public and private network are off.
I read that for someone starting the Windows Firewall Service resolved the issue but it is already started on my server.

 

I read on internet:
https://blogs.msdn.microsoft.com/fiddler/2011/12/10/revisiting-fiddler-and-win8-immersive-applications/
https://mymemorysucks.wordpress.com/2013/11/12/issues-with-fiddler-on-windows-8-1-and-ie-11/

 

but could not find solution.

What should I do to enable this since I really need Fiddler in order to collect data on the server.

 

Thank you,

Veljko

is it possible transmit not buffered responce when request created by utilCreateResponseAndBypassServer?

code:

on_before_request(Session oSession)
{
    if(oSession.fullUrl=='http../123')
    {
    oSession.utilCreateResponseAndBypassServer();
    oSession.bBufferResponse=false;
    my_curl_downloader(oSession.fullUrl,
    /*on headers line availible*/delegate(byte[] buf, int size, int nmemb, Object extraData)
    {
    var header_str=Encoding.UTF8.GetString(buf);
    //oSession.oResponse.headers.AssignFromString(header_str);

    var header=header_str.split(':');
    oSession.oResponse.headers.Add(header[0],header[1]);
    },
    /*on data availible*/delegate(byte[] buf, int size, int nmemb, Object extraData)
    {
    oSession.state=SessionStates.ReadingResponse;//?????????????
    oSession.responseBodyBytes.append??(buf); //?????????
    })
}
}

Greetings

I was wondering if it is possible to inject location tracking permission into a remote browser and how I can investigate such issue. I saw some ten trackers, and cookies from the suspected site in the Firefox shield feature, and I like to look inside the blocked content. I saw items on hotjar, google analytics, and others. I do have fiddler installed and think I can configure it to see the https traffic. Is there a view that will show me trackers and cookies? What is the best way for me to search for what I am looking for in fiddler please? I am glad to provide more information, pics, etc. 

Hello, I've successfully used FiddlerCore on windows to capture net traffic in Python script.

Now I want to try it on Linux. I followed the guide to install fiddler-linux based on mono, but after installation I don't find FiddlerCore*.dll. How shall I install FiddlerCore on Linux?

Thanks.

Look the screenshot.

All requests have 0 body.

How to fix it?

Thanks.

I'm getting an error on launching Fiddler.  "Port 9000 is in use by process 'zsatunnel:12596'. Would you like Fiddler to use a random port instead?"

If I click yes it doesn't capture anything.   I click no and it suggests I manually configure fiddler. I'm not sure how to proceed. Is there a way to configure fiddler to work in this environment? 

Hello. I really like to use fiddler on windows, but on linux (xubuntu 18.04) I encountered the following problem.

I need to CAPTURE and DECRYPT HTTPS traffic. However, fiddler does not do this.

The traffic is captured ✅, but NOT decrypt ❌, in the inspector I get the following message: "This is a CONNECT tunnel, through which encrypted HTTPS traffic flows. This is not a decrypted HTTPS decryption option. Settings can be found inside Tools> Options> HTTPS".

As I understand it, the problem is NOT that I incorrectly imported certificates into the system and the browser, since I do NOT receive error messages in firefox.

Studying fiddler logs, I noticed the following information:

Does this mean that this feature (HTTPS decrypt) is not supported on linux? Or do I make some kind of mistake?

How I run fiddler: mono Fiddler.exe (or sudo mono Fiddler.exe, nothing changes).

My fiddler settings: http://i.imgur.com/eT9fh0s.png (sorry for the colors, conflicts with my theme)

Thanks.

I'm using chinese software which is using QtWebEngine but Fiddler is unable to capture anything from it even i selected process to that only. Nothing shows up. HTTPS and certificate enabled and are working perfectly with browsers and other softwares

QtWebEngine is based on chromium and is open source https://wiki.qt.io/QtWebEngine. Fiddler is supossed to capture anything http/s related

The process running is qtwebengineprocess.exe

Anyone know anything about it?