System scaling is ignored. Main menu is 1/2 cut off (except for Tools, oddly).

Previous version was fine.

Any idea what I can do about this?

See attached showing the donked up menu and a properly scaled about box on top of an illegibly tiny (on UHD) main window.

 

 

This was the error message:

---------------------------
Playback 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.

Sound API only supports playing PCM wave files.

Type: System.InvalidOperationException
Source: System
   at System.Media.SoundPlayer.ValidateSoundData(Byte[] data)

   at System.Media.SoundPlayer.LoadAndPlay(Int32 flags)

   at Standard.ResponseWebView.btnPlay_Click(Object sender, EventArgs e)


Fiddler v5.0.20173.50948 (x64 AMD64) [.NET 4.0.30319.42000 on Microsoft Windows NT 10.0.16299.0] 
---------------------------
OK   
---------------------------

 

Granted the error message does give helpful stuff like: "Sound API only supports playing PCM wave files."

Which means the response was likely just incorrectly assumed to be a wave file.

I clicked the PLay button on the WebView becuase none of the other views are useful.

I would really just like to download a version of the file and then play it from another application but I do not know how in Fiddler and that would be the larger issue.

 

I installed Fiddler on Fedora 24. After running Fiddler for a while, Fiddler crashed suddenly with this error.

After this error, I can't see Fiddler Window and I found all the internet connection are lost. I can't connect internet page on Chrome browser even though the Fiddler and mono process . The workaround is launching Fiddler again and exit from the menu.

I've been working with fiddlercore to capture headers not raw packet data(which i don't need) now for more more info i shifted to windows form(c#) to windows service(c#). As i'm in learning process i'm facing some issue related to fiddlercore. 

Well the issue is i'm facing is not technical or programmatically  solvable. Any have any demo to how to work with fiddlercore in windows service because i just need some guide lines 

How can I "not load" the the binary of any requests? 
Sometimes I simply want to read the Content-Disposition parameters of file uploads. For example:
If I had uploaded a 10MB file it would have been pretty much impossible for me to get all the Content-Disposition parameters. Because as soon as you click on such a big request/response in raw mode, Fiddler freezes trying to load a huge part of the data into the GUI, but usually it stops after x KB and thus doesn't give me the content-disposition parameters below the binary part.

Hi Eric,
     I'm using fiddler4 with selenium(chrome web driver).Fiddler failed to capture traffic of the chrome browser opened by selenium web driver,then i have manually opened chrome browser fiddler successfully captured the traffic.

Regards,
Avinash.

I attempted to capture Firebase traffic for an iOS app. The app is wholely developed through Firebase on which I need to do a load test. As JMeter was unable to capture the requests I tried this using Firebase.

I installed the latest version and finished the configuration step by step as per the guidelines on the system as well as on the iPhone. I trusted the certificates as well.

Fiddler was able to capture HTTPS requests from other websites and apps but not from the APP which used Firebase.

Do I need to do something more for this to work. Is there a work around available? I am stuck here and could really use some help.

 

Thanks.

I have installed Fiddler's certificate to the iOS device and set trust at Settings > General > About > Certificate Trust Setting.but I when I use Apple's App Store app it says "session #401:The server (gdmf.apple.com) presented a certificate that did not validate,due to RemoteCertificateChainErrors"

I have installed FIDDLER on a Windows 1012 Server on a corporate network with very rigid Firewall rules. When I run Fiddler I receive this error:

06:43:53:2458 Fiddler Running... 
06:43:53:2771 Fiddler.Network.AutoProxy> AutoProxy Detection failed. 
06:43:53:2771 AutoProxy failed. Disabling for this network. 
06:44:34:8166 fiddler.network.readresponse.failure> Session #2 raised exception An existing connection was forcibly closed by the remote host 

 

I suspect Firewall rules. I need to submit a Firewall Change Request to allow exceptions for Fiddler to operate on that server, but I need details from Fiddler Tech Support. Can you please identify the external targets / requirements which Fiddler will try to reach out to? (We need to set our Firewall to allow Fiddler to function)

For a few months now on my Windows 10 machine I can't start Fiddler successfully.

Here's what I get in the Event logs:

Log Name:      Application
Source:        Application Error
Date:          30.01.2018 11:05:37
Event ID:      1000
Task Category: (100)
Level:         Error
Keywords:      Classic
User:          N/A
Computer:      ****
Description:
Faulting application name: Fiddler.exe, version: 4.6.3.50306, time stamp: 0x584b0128
Faulting module name: KERNELBASE.dll, version: 10.0.16299.15, time stamp: 0x4736733c
Exception code: 0xe0434352
Fault offset: 0x0000000000013fb8
Faulting process id: 0x10b98
Faulting application start time: 0x01d399a11c497360
Faulting application path: C:\Program Files (x86)\Fiddler2\Fiddler.exe
Faulting module path: C:\WINDOWS\System32\KERNELBASE.dll
Report Id: 021dcf44-7589-4944-a00d-8f3eb1243ed8
Faulting package full name: 
Faulting package-relative application ID: 
Event Xml:
<Event xmlns="http://schemas.microsoft.com/win/2004/08/events/event">
  <System>
    <Provider Name="Application Error" />
    <EventID Qualifiers="0">1000</EventID>
    <Level>2</Level>
    <Task>100</Task>
    <Keywords>0x80000000000000</Keywords>
    <TimeCreated SystemTime="2018-01-30T08:05:37.110892600Z" />
    <EventRecordID>93659</EventRecordID>
    <Channel>Application</Channel>
    <Computer>****</Computer>
    <Security />
  </System>
  <EventData>
    <Data>Fiddler.exe</Data>
    <Data>4.6.3.50306</Data>
    <Data>584b0128</Data>
    <Data>KERNELBASE.dll</Data>
    <Data>10.0.16299.15</Data>
    <Data>4736733c</Data>
    <Data>e0434352</Data>
    <Data>0000000000013fb8</Data>
    <Data>10b98</Data>
    <Data>01d399a11c497360</Data>
    <Data>C:\Program Files (x86)\Fiddler2\Fiddler.exe</Data>
    <Data>C:\WINDOWS\System32\KERNELBASE.dll</Data>
    <Data>021dcf44-7589-4944-a00d-8f3eb1243ed8</Data>
    <Data>
    </Data>
    <Data>
    </Data>
  </EventData>
</Event>


Log Name:      Application
Source:        .NET Runtime
Date:          30.01.2018 11:05:36
Event ID:      1026
Task Category: None
Level:         Error
Keywords:      Classic
User:          N/A
Computer:      ****
Description:
Application: Fiddler.exe
Framework Version: v4.0.30319
Description: The process was terminated due to an unhandled exception.
Exception Info: System.IO.FileNotFoundException
   at Fiddler.FiddlerApplication..cctor()


Exception Info: System.TypeInitializationException
   at Fiddler.FiddlerApplication.ReportException(System.Exception, System.String)
   at Fiddler.CONFIG..cctor()


Exception Info: System.TypeInitializationException
   at Fiddler.frmViewer.•(System.Object, System.UnhandledExceptionEventArgs)




Event Xml:
<Event xmlns='http://schemas.microsoft.com/win/2004/08/events/event'><System><Provider Name='.NET Runtime'/><EventID Qualifiers='0'>1026</EventID><Level>2</Level><Task>0</Task><Keywords>0x80000000000000</Keywords><TimeCreated SystemTime='2018-01-30T08:05:36.981296100Z'/><EventRecordID>93658</EventRecordID><Channel>Application</Channel><Computer>****</Computer><Security/></System><EventData><Data>Application: Fiddler.exe
Framework Version: v4.0.30319
Description: The process was terminated due to an unhandled exception.
Exception Info: System.IO.FileNotFoundException
   at Fiddler.FiddlerApplication..cctor()


Exception Info: System.TypeInitializationException
   at Fiddler.FiddlerApplication.ReportException(System.Exception, System.String)
   at Fiddler.CONFIG..cctor()


Exception Info: System.TypeInitializationException
   at Fiddler.frmViewer.•(System.Object, System.UnhandledExceptionEventArgs)


</Data></EventData></Event>