Last Updated: 28 Mar 2024 06:21 by d
Created on: 20 Oct 2022 18:52
Type: Feature Request
Support TLS/1.3 now that .NET Framework does

The .NET Framework has added support for TLS/1.3.

We should do the work to enable TLS/1.3 in Fiddler (it's very little additional work to add "Tls1.3" to the options dialog and the underlying code). 

Posted on: 28 Mar 2024 06:21

It appears that Fiddler has not been supporting TLS/1.3 because they have been developing Fiddler Everywhere.

In fact, it is because Fiddler Classic and Fiddler Everywhere are competitive, with the former being paid and the latter being free. If the free version's features are done well, who else will use the paid version?

I have also tried Fiddler Everywhere, but to be honest, it doesn't work as well as Fiddler Classic yet.
The Fiddler Everywhere installation is also very large and disgusting.
I don't want to say anything for the so-called cross platform.

Posted on: 04 Mar 2024 16:04
Still hoping for TLS 1.3 support in Fiddler Classic! Is this enhancement still in the works? Thanks!
Nick Iliev
Posted on: 05 Jul 2023 08:05



The Fiddler team still supports Fiddler Classic, and all features related to that product are triaged, prioritized, and planned for future releases.

Currently, the team's main priority is developing and improving the new cross-platform version of Fiddler called Fiddler Everywhere. The application works on macOS, Linux, and Windows and provides modern UI and fresh features, including support for TLS 1.3, HTTP/2, gRPC, and much more.

Learn more about the support for TLS 1.3 in Fiddler Everywhere here...


Nick Iliev
Progress Telerik

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Posted on: 04 Jul 2023 12:46
Some servers now accept only tls1.3, is fiddler classic abandonware?
Posted on: 24 May 2023 04:12
we really need TLS/1.3 on Fiddler Classic!!!