During the process of downloading Fiddler, a black interface will flash up and I will be able to install it successfully. However, when I try to use the software, no matter how I start it, it cannot be opened.

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.

How can I exempt all in FiddlerCore as if I was using the Win Config option in Fiddler Classic? Thank you in Advance!

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

......

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

So; in one of my applications; I am attempting to try to find text within a decoded response. The problem is, that response changes every day. However, the format as you see below always stays the same BEFORE the numbers that are underlined. Only the numbers change. The end goal is to find this response; and then print it to a textbox. How can I accomplish this?

 

 

 

I keep getting this error, no matter what I'm doing... I've tried both SaveRequestBody and SaveResponseBody. What am I doing wrong?

 

 

 

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

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.

"Fiddler everywhere" has animations.
I hate animations

How can i turn off animations?