I recently upgraded fiddler classic to the latest version, but after the upgrade, my extension file dll did not take effect. Its function is to decrypt traffic, which may be related to the upgrade of fiddler. I read the upgrade description and it seems to be a security-related issue. please help me.

I looked through the documentation and found nothing of value: https://docs.telerik.com/fiddler/extend-fiddler/extendwithdotnet

Fiddler classic the lastest version information:

5.0.20243.10853 [16/05/2024]
fixes:
 Check for updates fails in the beta channel.
 Update third party dependencies to mitigate potential security vulnerabilities.

When I try to do that, it doesn't work

I need to make a change to the text of a file that is large and if I do it the normal way this change doesn't happen, I think I don't have time to edit the response and that's why it loads without changing. Because in small files it replaces the normal load on the page with the modified response. Is there any way to get around this? Thanks.

Is fiddle compatible with iOS?

Hi
I am a software tester.
After installing the latest version of fiddler(4.3.2) I am unable to inspect the traffic from iOS app which I am testing. I spend a lot of time to understand the issue and finally I found it is only happening in latest versions.
The app is getting stuck and API requests are not being shown in the fiddler. Not sure but I think it has to do with TLS 1.3.
Working version-4.0.1
When I install this version(4.0.1) it gets updated to latest version automatically when I close and relaunch the fiddler.
How to resolve this issue please?

我尝试了所有方法，但无法解密他的HTTPS。请帮助我。

网址：https://visa.vfsglobal.com/chn/zh/pol/

请尝试使用 F5 刷新页面，它会提示：对不起，您已被阻止。

谢谢。

Hi,

On June 13, around 19:00 UTC, the Fiddler Everywhere team discovered an issue with the login backend, which prevented some of our users from logging in and using the app. The issue was resolved shortly before 21:00 UTC and the team is now monitoring the service health. 

If you have experienced "Gateway Timeout" errors while trying to login, please try again now.

If you have purchased a license during that time, but your account does not show it now, please contact us to resolve this.

Please accept our apologies for the inconvenience.

Request from a Python code only works if Fiddler is open and capturing traffic. If I turn off capturing or close Fiddler Everywhere (for Mac) request response is always 403 (Forbidden). Probably something related to certificates. Can you help me on this?

I user fiddler classic as proxy and it works well.

i try to use it to access https://link.springer.com/ iget this:

System.Security.SecurityException Failed to negotiate HTTPS connection with server.fiddler.network.https> HTTPS handshake to link.springer.com

This is because fiddler classic does not yet support tls 1.3. When will fiddler classic be updated to support tls1.3?

thanks so much!

Hello. I want to scan the traffic in an application on iOS, but the traffic is not scanned. I've done all the debugging with the certificates. Traffic is scanned in other applications, but this app (name: arc8 application) is not visible. Is there a solution to open this http://api.prod.arc8.io:443 traffic?