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Fiddler Forum
1 answer
17 views

Good afternoon,

We have installed Fiddler Classic on a Windows 11 laptop specifying install directory within Program Files, as per https://feedback.telerik.com/fiddler/1441442-default-install-fiddler-for-all-users, and it is not installing correctly. It just dumps the files in the folder. No Start Menu entry anywhere, no entry in the machine Uninstall registry. Key is however created within the installing users Uninstall key. Same issues if the installer is sent via management software, e.g. SCCM. Only here there is no registry entry created at all. This does not follow basic principles for software for management in a corporate environment, or frankly any other environment than that of a skilled personal user.

I have searched your forum and there is nothing recent to this post for machine-wide / corporate installs. As this "solution" was from 2019 and advises that it may cause issues with extensions, I expect that now, 4-5 years later, you have since sorted your installer out?

Tried to uninstall manually from the install directory using your uninst file located there and this fails stating: "A Progress Telerik Fiddler Classic component appears to be running. Please close all Progress Telerik Classic-related applications and try again." There is no process running called Fiddler, and looking through the list there is nothing obviously linked to your software. System has been restarted and same issue. Had to login with another user to uninstall. This is not appropriate. Please provide a full listing of your processes. Quite frankly, your software is acting more like malware.

Do you have a machine-wide installer please? A working one. The current state for deployment of your software is appalling.

Regards,

Craig.

Nick Iliev
Telerik team
 answered on 21 Feb 2024
1 answer
13 views
How can I exempt all in FiddlerCore as if I was using the Win Config option in Fiddler Classic? Thank you in Advance!
Nick Iliev
Telerik team
 answered on 21 Feb 2024
1 answer
16 views

Hi, i have lots of error sessions with responseCode 504 which boring,and i try:

 

if(oSession.responseCode == 504){

    oSession["ui-hide"]="true";

}

it doesn't work any all.

Can someone help me,please

ps:

the fiddler log shows some thing special:

Fiddler.Network.ProtocolViolation - [#6691] The Request's Host header did not match the URL's host 

URL Host: connpm.gj.qq.com:47873
Header Host: connpm.gj.qq.com

and the req headers are:

POST http://connpm.gj.qq.com:47873/q.cgi HTTP/1.1
Host: connpm.gj.qq.com:47873
Connection: Keep-Alive
User-Agent: Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 6.1; Trident/4.0)
Accept: */*
Content-Type: application/octet-stream
Content-Length: 430
ProxyConnection: Keep-Alive
Pragma: no-cache

......

Nick Iliev
Telerik team
 answered on 12 Feb 2024
1 answer
17 views

Hello,

We have an Exchange Server behind e FortiWeb in a reverse proxy mode.

is it possible to test if a reverse proxy config really works? 

 

thanks

Nick Iliev
Telerik team
 answered on 12 Feb 2024
1 answer
12 views
When i capture traffic and try to load something on the page i get logged out...... when i turn capturing off and reload the page everything is fine all pages load fine .... is this a Security issue like a WAF?? a Captcha issue ? or a Cloudflare Issue?  I have tls1.0, 1.1 and 1.2 enabled
Nick Iliev
Telerik team
 answered on 05 Feb 2024
1 answer
21 views

Hi,

 

There is an issue with the Progress Telerik Fiddler Web Debugger.

When the system is trying to connect with a websocket endpoint which can't be reached it won't show up in the stream.

It's just completely missing. I would expect that the the websocket should show up in red with a 404 result.

Nick Iliev
Telerik team
 answered on 30 Jan 2024
1 answer
16 views

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?

Nick Iliev
Telerik team
 answered on 25 Jan 2024
1 answer
9 views

Is it possible with Fiddler Core to completely replace a response like its possible with Fiddler Classic to do in the "RAW" section if you put a breakpoint before the Response?

Thanks

Nick Iliev
Telerik team
 answered on 22 Jan 2024
1 answer
31 views

I have a library that I'm testing out and the .Net Framework 4.6.2 project logs just fine with the normal app.config values.  When I set up the same project using .Net 6/7 I can't seem to get it to capture any packets.

I run netsh command under an elevated privilege command prompt before starting fiddler and then I run the debug mode in VS 2022 and see no entries come across fiddler.  

C:\WINDOWS\system32>netsh winhttp set proxy 127.0.0.1:8888

Current WinHTTP proxy settings:

    Proxy Server(s) :  127.0.0.1:8888
    Bypass List     :  (none)

The only way I can get it to log anything is to enable "Act as a system proxy on startup".  This isn't too practical as then I'm seeing all traffic, which is a lot.

The request is to an https-enabled site.

Is there something I need to do differently in this case?

All of the articles I have read points to this as the correct direction, but they are all 2019 or older.

 

 

Nick Iliev
Telerik team
 answered on 17 Jan 2024
1 answer
25 views
Hello.My Fiddler Classic Unable to capture traffic from Windows store.can you help me?
Rosen Vladimirov
Telerik team
 answered on 12 Jan 2024
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