---------------------------
Process-determination failed.
---------------------------
Fiddler has encountered an unexpected problem. If you believe this is a bug in Fiddler, please copy this message by hitting CTRL+C, and submit a bug report at http://www.telerik.com/forums/fiddler.

The type initializer for 'System.Console' threw an exception.

Type: System.TypeInitializationException
Source: System
  at System.Diagnostics.Process.StartWithCreateProcess (System.Diagnostics.ProcessStartInfo startInfo) [0x0036b] in <bd46d4d4f7964dfa9beea098499ab597>:0
  at System.Diagnostics.Process.Start () [0x00040] in <bd46d4d4f7964dfa9beea098499ab597>:0
  at (wrapper remoting-invoke-with-check) System.Diagnostics.Process:Start ()
  at .‚‚.” (System.Int32 Ÿ) [0x00064] in <616b130fa1474630b442fde0f9112534>:0

System.TypeInitializationException: The type initializer for 'System.ConsoleDriver' threw an exception. ---> System.Exception: Magic number is wrong: 542
  at System.TermInfoReader.ReadHeader (System.Byte[] buffer, System.Int32& position) [0x0002b] in <8f2c484307284b51944a1a13a14c0266>:0
  at System.TermInfoReader..ctor (System.String term, System.String filename) [0x00065] in <8f2c484307284b51944a1a13a14c0266>:0
  at System.TermInfoDriver..ctor (System.String term) [0x00058] in <8f2c484307284b51944a1a13a14c0266>:0
  at System.ConsoleDriver.CreateTermInfoDriver (System.String term) [0x00000] in <8f2c484307284b51944a1a13a14c0266>:0
  at System.ConsoleDriver..cctor () [0x00062] in <8f2c484307284b51944a1a13a14c0266>:0
   --- End of inner exception stack trace ---
  at System.Console.SetupStreams (System.Text.Encoding inputEncoding, System.Text.Encoding outputEncoding) [0x0000a] in <8f2c484307284b51944a1a13a14c0266>:0
  at System.Console..cctor () [0x000a8] in <8f2c484307284b51944a1a13a14c0266>:0
Fiddler v4.6.20171.26113 (x64 ) [.NET 4.0.30319.42000 on Unix 4.16.0.2]
---------------------------
OK   
---------------------------

---------------------------
Awww, Fiddlesticks!
---------------------------
Fiddler has encountered an unexpected problem. If you believe this is a bug in Fiddler, please copy this message by hitting CTRL+C, and submit a bug report at http://www.telerik.com/forums/fiddler.

Root element is missing.

Type: System.Xml.XmlException
Source: System.Xml
   at System.Xml.XmlTextReaderImpl.Throw(Exception e)

   at System.Xml.XmlTextReaderImpl.ParseDocumentContent()

   at System.Xml.XmlTextReaderImpl.Read()

   at System.Xml.XmlTextReader.Read()

   at Fiddler.Session.LoadMetadata(Stream strmMetadata) in C:\JenkinsHome\jobs\FiddlerReleaseBuild\workspace\Fiddler2\Common\Core\Session.cs:line 1616


Fiddler v5.0.20181.14337 (x86 x86) [.NET 4.0.30319.42000 on Microsoft Windows NT 10.0.17134.0] 
---------------------------
OK   
---------------------------

Hello Everyone,

I am facing an issue while installing the Microsoft neXpert Performance Analysis Plugin.

Issue Background:

I have installed Fiddler v5.0.20182.28034 and tried to install neXpert but i am getting an error message from the microsoft plugin "neXpert can only be installed if Fiddler 2.2.9.4 or greater has been installed first".

Anyone faced this issue earlier, is there any other work around solution for this?

Hi! 

I am a web analyst and not a front-end developer.

I am trying to debug a site's analytics using imacros and Fiddler (I am open to another solutions that can log a traffic and autosave a log). Never done it before.
It is a 1 site that I will run using 5-10 simultaneous firefox profiles under Imacros.

What I cannot understand is how will I differentiate in fiddler which log correspond to which firefox profile since they run simultaneously.

 

VERSION BUILD=11.5.498.2403; Windows 10; Imacros Browser + Firefox Imacros 8.9.7; Firefox 49.0.2

All I get is a warning, then no program pops up.

 

mono 5.10.1.57

 

MBPro15-512:fiddler-mac peterkellner$ mono Fiddler.exe
WARNING: The Carbon driver has not been ported to 64bits, and very few parts of Windows.Forms will work properly, or at all
^C

When I try to runt he Fiddler installer I get an error.

After agreeing to the EULA and specifying an install folder I get an error that says:

"A Progress Telerik Fiddler component appears to be running. Please, close all Progress Fiddler-related applications and try again."

I am not currently running Fiddler. I don't know how to look for what is considered "related."

--Jacob

Hi Eric,
I was a newbie to FiddlerCore.I want to capture https traffic when requested to website using Selenium and FiddlerCore in .net.Coded as below 

CODE:

CONFIG.bCaptureCONNECT = true;
 CONFIG.IgnoreServerCertErrors = true;
var cert = InstallCertificate();// getting true
FiddlerCoreStartupFlags flags = FiddlerCoreStartupFlags.DecryptSSL & FiddlerCoreStartupFlags.AllowRemoteClients & FiddlerCoreStartupFlags.CaptureFTP & FiddlerCoreStartupFlags.ChainToUpstreamGateway & FiddlerCoreStartupFlags.MonitorAllConnections & FiddlerCoreStartupFlags.CaptureLocalhostTraffic;
FiddlerApplication.Startup(desiredPort, flags);
FiddlerApplication.BeforeRequest += RequestDetails;

private static void RequestDetails(Session oSession)
        {
            Console.WriteLine("Request URL {0}", oSession.fullUrl);// getting only http traffic details
            
        }

public static bool InstallCertificate()
        {
           
            if (!CertMaker.rootCertExists())
            {
                if (!CertMaker.createRootCert())
                    return false;

                if (!CertMaker.trustRootCert())
                    return false;
            }

            return true;
        }

Could you suggest me the way to capture https traffic


Thank you

Regards,
Avinash

     HI,

CONNECT mhms11.airtel.tv:443 HTTP/1.1 I see the tunnel to this address

Fiddler's HTTPS Decryption feature is enabled, but this specific tunnel was configured not to be decrypted. Settings can be found inside Tools > Options > HTTPS.
A SSLv3-compatible ServerHello handshake was found. Fiddler extracted the parameters below.
But no data after that.

Put this in fiddler   <client>;ssl2;ssl3;tls1.0;tls1.1;tls1.2 and installed certificates. This is happening for most android app. I am creating a hotspot in windows and connecting android tab. I installed. the root certificate on android. Any help to check if its certificate pinning rather than guessing which is creating this issue

I am trying to login into my application through Jmeter but when trying to get the response, fiddler displayed "Content -Type: multipart/from-data is not yet fully supported."

Hello, I'm having an issue where Fiddler and FiddlerCore are missing specific HTTP traffic.

I'm using both to determine where video players keep their video files by tracing the HTTP requests and issue takedowns on those locations. Problem is starting from at least last week, I am not seeing the requests/responses for these video files from a single website that I was once able to see in Fiddler or using FiddlerCore in my C# applications. I am seeing all other HTTP traffic, I have no filters on, and the missing requests are not HTTPS.

An example URL is: http://megashare.im/watch-bhaag-milkha-bhaag-2013-online-free-megashare.html

The video player on this page will make a HTTP request once clicked:


Both Fiddler and FiddlerCore do not capture this request or its response. I was able to get the missing request by using WireShark:


I have noticed that when navigating to the example URL the Fiddler GUI logs many errors in this format:


And FiddlerCore is also returning errors when I'm attempting to parse the Sessions when navigating to the example URL using Selenium in my C# application:


I'm not exactly sure why Fiddler isn't able to fully capture these video source URLs, but any help would be appreciated.

Thanks,
Anthony