Enable TLS1.1 and TLS 1.2 in Fiddler


This post will explain how you can enable TLS 1.1 and TLS 1.2 in fiddler so you can test your Web Apis with TLS 1.1 or 1.2. In order to do this, navigate to

Tools --> Options --> HTTPS

You will see the below screen

If Decrypt HTTPS traffic is not enabled, enable it and see what is shown in Protocols. If you do not see tls1.1;tls1.2, then click on the protocols and add the below line in the pop-up.


Click OK. Ok again. Then restart fiddler for changes to take effect.

Now all the further requests that you make from Fiddler will have TLS1.1 and 1.2 support.

Hope this helps!

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4 Responses to Enable TLS1.1 and TLS 1.2 in Fiddler

  1. Rob says:

    What fiddler version are you referring to? The version I have doesn’t include the protocols listing. I’m using Fiddler Web Debugger (v2.4.9.7).

  2. iic says:

    Brilliant! I was having issues in a hardened environment. Did not realize until now you had to enable TLS 1.2 support in Fiddler. Thanks!

    Would you happen to know how to check the TLS version for a given packet directly within Fiddler? I’m using right now Wireshark in parallel…

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