Fiddler is failing set up the system proxy.

 

This is what the log says:

11:37:30:6321 Fiddler Running...
11:37:30:6321 Fiddler was unable to get information about the proxy for 'DefaultLAN' [0x2f92].

11:37:30:6321 !WARNING: Failed to get proxy information for Connection 'DefaultLAN'.
11:37:30:6321 Setting upstream gateway to none
11:37:30:6351 Windows 8+ AppContainer isolation feature detected.

 

I also tried to manually change the proxy settings from inetcpl.cpl. but when I try to click "OK" in the "LAN Settings" dialog, nothing happens. The "Cancel" button does work though.

I need to see what I'm sending to a SalesForce endpoint, but so far, nothing I've done works.

 

How to?

 

Thanks

Phil

i have a issue where my fiddler stops capturing calls when i connect to my vpn!!The issue is ,
Whenever i connect to VPN, i have to change

If i turn off the automatic configuration script, my fiddler works, but my internet fails. Since all my Rest calls are internet based, everything returs 502
. and my Proxy server configuration has


any help you would be great!!!

When I click "WinConfig" then the "Refresh" button, an error pops up.

This is the system information in About menu.

v5.0.20194.41348 for .NET 4.6.1
Built: Oct 3/2019

64-bit AMD64, VM: 65.0mb, WS: 116.0mb
.NET 4.7.1 WinNT 10.0.18362.0

If a site uses, for example, a <script src=... then I want to catch that script and modify it.

I choose Unlock for editing and modify it, but I've noticed when I click Replay/Reissue the browser's console still shows only the original Response.

Meanwhile, Fiddler does show the new modified request being sent.

So what does it mean?

Hi,

I want to modify the response body value which is stream, but failed.

The stream value is just like MP4, the ascii of head data is "00 00 00 20 66 74 79 70 69 73 6F 6D...".

And I planed to modify them to "FE FE FE FE FE FE FE ....". But when I check the sent data, I found them were changed to "C3 BE C3 BE C3 BE C3 BE C3 BE C3 BE ..."

The following is my JScript code:

var oBody;
oBody = "\xfe\xfe\xfe\xfe\xfe\xfe\xfe\xfe\xfe\xfe\xfe\xfe\xfe\xfe\xfe\xfe\xfe\xfe\xfe\xfe\xfe\xfe\xfe\xfe\xfe";
oSession.utilReplaceRegexInResponse("ftypisom.*",oBody);

// oSession.utilSetResponseBody(oBody);                    // I tried this but failed too...

How could I set response body to any ascii.

Thanks :)

Hi,

 

I tried to install Fiddler Everywhere on Raspbian Linux on a Raspberry. Is that possible? I saw that previous versions supported mono, but the AppImage-file seems to be a x86_64 binary. Can I install it with mono or is that not possible anymore?

 

Thanks,

Matthias

Hello,

I'm new to fiddler.

Is it possible to capture and save the videos or stream running on the browser?

How to achieve that if possible?

 

Thanks in advance.

 

According to Understanding FiddlerScript, if you don't define Rules=>Customize Rules, then Fiddler uses "the latest SampleRules.js file included in the Fiddler installation package".

But what if I want to add define just one specific rule and still always enjoy the latest SampleRules?

Is it possible to use customized rules in an opt-in fashion? That is, keeping customized rules almost empty and having all defaults automatically be loaded from SampleRules?

While Fiddler is running, Postman requests fail. As instructed by Postman I have to disable SSL certificate verification in Postman. Is this best practice, or is there some other way so Postman works normally with Fiddler?