Hello,

I recently installed Fiddler, and I must say it is super easy to use and works perfectly in almost every example.

However, I encountered one special error: I am trying to track traffic on my Mac (Mac OS Sonoma 14.6.1.) for the Apple TV app (1.4.6.32).

When I try to launch Fiddler first and then the Apple TV app later, Apple TV won't start properly, and only my collection is visible. I am not able to see or visit the store or even the Apple TV+ subscription offer.

When I switch the order, so Apple TV is launched first and Fiddler afterward, it works, but there are some hiccups, like images not properly downloading. And, of course, the initial traffic when Apple TV is launching, which is crucial to me, is not visible anymore, and I can not force the app to reload the Apple TV storefront.

Is there a problem with the certificates or any other settings?

I also noticed during the very first launch and some digging in Settings that basically every major Apple domain (apple.com, mzstatic.com) was blacklisted, which was the reason why it was not working at the beginning entirely. After the removal of the Apple domains from the blacklist, Apple traffic is captured, but only if I use the order mentioned above (Apple TV first, Fiddler later).

I appreciate your help

T.

Hello, my computer is Windows 11 operating system.  I can easily monitor traffic on my ios phone with fiddler classic. But I downloaded fiddler everywhere. I enter the program and activate allow remote device to connect to monitor traffic according to the instructions. I write http://ip address:8866 on my iOS phone, but I can't connect. Allow remote device to connect is disabled when you log out of Fiddler everywhere and log back in. I activate and save. Closing and reopening the program disables it again.  How can I solve the problem? I think the problem is with the computer. The computer and phone are connected to the same network. I can use it comfortably with Fiddler classic. The problem is only with fiddler everywhere.  allow remote device to connect does not keep active. As a result, the phone cannot be connected. Please support.

hi
I'm use fiddler "everywhere enterprise"
I'm having trouble with proxy connection after setting up VPN on Android.

[Pre-Condition]
 - PC: Mac OS / WindowOS
 - VPN App: Global Protect
 - Device setup: CA installed in PC / Android ddvice (No VPN setup) / Set the device to the same proxy information as the PC

[Check]
 - iOS
     > set up VPN > Proxy connection is successful and traiffc checked               << Pass
     > Proxy connection is successful and traiffc checked > can set up VPN        << Pass 

 - AOS
     > No VPN setup > Proxy connection is successful                                            << Pass
     > setup VPN > Proxy connection is successful but cannot traiffc check        << Fail
     > Proxy connection is successful and traiffc checked > cannot setup VPN   << Fail
          - VPN app Fail comment:  could not verify the server cerificate of the gateway / if the issue persists, contact your administrator



Please help
thank you!

I have a certain iOS app that's not publicly available so you won't be able to fully troubleshoot, however I can explain the behavior I'm experiencing. 

When I attempt to use the app when  'Decrypt HTTPS Traffic' is disabled, the app works, but the data is encrypted and Fiddler prompts me to configure the settings.

When I enable 'Decrypt HTTPS Traffic' the app does not let me do anything and simply says 'network unavailable.' 

I did install the iOS certificate. I tested on several other apps and don't appear to be experiencing the same problem. Any ideas on how I can further troubleshoot this?

 

Thank you.

 

 

 

I tried loading a page in the Fiddler Browser, there is about 21 cookies

 

When I use the inspector, and filter by cookie, I find only creation of 4 or so cookies.

I am trying to find the JS creating the rest

When I try to check the body using the Fiddler Proxy on a particular website, I can find the body value in fiddler session list. But when I try to check body on Fiddler Script, the body value is checked as "".
I checked the session list that the body value is more than 260000 characters, but the Fiddler Script confirms it as 0 characters.

Here is example

This code contained in onBeforeResponse

```

var oBody = System.Text.Encoding.UTF8.GetString(oSession.responseBodyBytes);

```

And here is the url of that particular website.

https://m.cgv.co.kr/

I've using fiddler more than 1 years, but this is the first case of this phenomenon. I'd appreciate it if you could tell me how to do it

 

 

 

I have a user rinoing Windows 11 23h2 Fiddler everywherehas not been able to load past the splash screen.  I've tried cleanring the cashe, reinstall etc and  after several re-installs the Fiddler everywhere v5.18 wont load at all now.  Here are the details from the electron.log:

I'm not sure what the unhandled exception is referring to and you guidance would be greatly appreciated

2024-09-24 11:12:06:225] [info] [Product information] Fiddler Everywhere 5.17.0
[2024-09-24 11:12:06:230] [info] [System information] win32 (Windows_NT/x64) - version 10.0.22631
[2024-09-24 11:12:06:285] [info] Initializing splash screen.
[2024-09-24 11:12:06:488] [info] Ensure no running cleanup nodejs and cleanup .net processes.
[2024-09-24 11:12:06:774] [info] Displaying splash screen.
[2024-09-24 11:12:30:989] [error] Unhandled exception: TypeError: Cannot read properties of undefined (reading 'trim')
    at C:\Users\username\main.js:85:4480)
    at ChildProcess.emit (node:events:519:28)
    at maybeClose (node:internal/child_process:1105:16)
    at ChildProcess._handle.onexit (node:internal/child_process:305:5)
[2024-09-24 11:20:26:463] [info] [Product information] Fiddler Everywhere 5.17.0
[2024-09-24 11:20:26:467] [info] [System information] win32 (Windows_NT/x64) - version 10.0.22631
[2024-09-24 11:20:26:524] [info] Initializing splash screen.
[2024-09-24 11:20:26:631] [info] Ensure no running cleanup nodejs and cleanup .net processes.
[2024-09-24 11:20:26:906] [info] Displaying splash screen.
[2024-09-24 11:20:45:287] [error] Unhandled exception: TypeError: Cannot read properties of undefined (reading 'trim')
    at C:\Users\username\main.js:85:4480)
    at ChildProcess.emit (node:events:519:28)
    at maybeClose (node:internal/child_process:1105:16)
    at ChildProcess._handle.onexit (node:internal/child_process:305:5)
[2024-10-02 10:17:31:159] [info] [Product information] Fiddler Everywhere 5.17.0
[2024-10-02 10:17:31:164] [info] [System information] win32 (Windows_NT/x64) - version 10.0.22631
[2024-10-02 10:17:31:208] [info] Initializing splash screen.
[2024-10-02 10:17:31:306] [info] Ensure no running cleanup nodejs and cleanup .net processes.
[2024-10-02 10:17:31:657] [info] Displaying splash screen.
[2024-10-02 10:18:03:416] [error] Unhandled exception: TypeError: Cannot read properties of undefined (reading 'trim')
    at C:\Users\username\main.js:85:4480)
    at ChildProcess.emit (node:events:519:28)
    at maybeClose (node:internal/child_process:1105:16)
    at ChildProcess._handle.onexit (node:internal/child_process:305:5)
[2024-10-02 12:21:09:225] [info] [Product information] Fiddler Everywhere 5.18.0
[2024-10-02 12:21:09:229] [info] [System information] win32 (Windows_NT/x64) - version 10.0.22631
[2024-10-02 12:21:09:296] [info] Initializing splash screen.
[2024-10-02 12:21:09:457] [info] Ensure no running cleanup nodejs and cleanup .net processes.
[2024-10-02 12:21:09:817] [info] Displaying splash screen.
[2024-10-02 12:21:40:602] [error] Unhandled exception: TypeError: Cannot read properties of undefined (reading 'trim')
    at C:\Users\username\main.js:85:4480)
    at ChildProcess.emit (node:events:519:28)
    at maybeClose (node:internal/child_process:1105:16)
    at ChildProcess._handle.onexit (node:internal/child_process:305:5)
[2024-10-02 12:24:16:592] [info] [Product information] Fiddler Everywhere 5.18.0
[2024-10-02 12:24:16:595] [info] [System information] win32 (Windows_NT/x64) - version 10.0.22631
[2024-10-02 12:24:16:644] [info] Initializing splash screen.
[2024-10-02 12:24:16:777] [info] Ensure no running cleanup nodejs and cleanup .net processes.
[2024-10-02 12:24:16:988] [info] Displaying splash screen.
[2024-10-02 12:24:45:610] [error] Unhandled exception: TypeError: Cannot read properties of undefined (reading 'trim')
    at C:\Users\username\main.js:85:4480)
    at ChildProcess.emit (node:events:519:28)
    at maybeClose (node:internal/child_process:1105:16)
    at ChildProcess._handle.onexit (node:internal/child_process:305:5)

can not find“System.Xml, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089”

I am developing a Chrome extension that activates a proxy. When I enable the VPN and reload the page, the following steps should occur:

1. The Chrome browser makes a request to the proxy.
2. The proxy sends a response with a 407 code.
3. Chrome should call chrome.webRequest.onAuthRequired and provide credentials to the proxy.

However, I don't see any browser interactions with the proxy server.

Is it possible to observe the interaction between Chrome and the proxy using Fiddler?

Hello everyone,

I am trying to use a certificate that I have in the Windows Certificate Store with Fiddler.

In fact I am running the Fiddler in the server that is using the certificate in IIS.

I load the certificate to avoid fiddler certificate with the following code in Customize rules:

var certName: String = new String("servername")
var oCert: X509Certificate2 = CertMaker.FindCert(certName)
var result = false
MessageBox.Show(oCert)
result = CertMaker.StoreCert("servername", oCert);
MessageBox.Show(result)

 

In 4 line I show the certificate and it is correct.

In line 6 I verify that the certificate is loaded (true).

But if I try to access with the browser, fiddler show it is capturing an decrypting but with fiddler certificate (DO_NOT_TRUST_FiddlerRoot)

Can you help me to use the correct certificate installed in windows store?

I am trying to follow something like:

The CertEnroll Certificate Generator (telerik.com)

I have colleagues using with pfx file:

CertMaker.StoreCert("example.com", "C:\\temp\\cert.pfx", "TopSecretPassword");

but I want to use the other method:

CertMaker.StoreCert("example.com", certMyCert);

 

Any idea?

 

Thanks in advanced.