Decrypt HTTPS Traffic Error

2 posts, 0 answers
  1. Mathew
    Mathew avatar
    1 posts
    Member since:
    Aug 2019

    Posted 08 Aug 2019 Link to this post


    I am trying to enable "Decrypt HTTPS Traffic" in Fiddler (Tools > HTTPS) and I keep getting an error in the log file.


    I tried "Trust Root Certificate" but I get an error that it can't be found (Refer to attached log)

    I tried to reset both the interception cert and all cert and I still get the error (refer to attached log)

    I tried to reset Windows Network Settings, nothing.

    I tried to run Fiddler as Admin, nothing. 


    The only time this worked was earlier before when I reset my Windows PC to a fresh installation, then I actually get the popup saying Scary Text ahead. But sadly I faced more issues after that and reset all certificates in the actions menu and now I am back to square one.



    I am on Windows 10 1809, but I've also tried to do this on Windows 10 1903 but I am getting the same error. Any help is definitely appreciated!


    Thank you,



  2. Eric R | Senior Technical Support Engineer
    Eric R | Senior Technical Support Engineer avatar
    397 posts

    Posted 13 Aug 2019 Link to this post

    Hi Mathew,

    There are a different options for generating Interception Certificates which are outlined below.

    Option 1 (Recommended) - Using the Bounce Castle Certificate Maker add-on.

    Option 2 - Switch to using CertMaker. Note that this is a legacy certificate generator.

    If the issue still persists, try configuring the configuring the Certificate Creation Preferences to Clear server certs on exit. See the below screenshot for how to do this.

    For reference, see the Understanding Fiddler Certificate Generators post.

    I hope this helps. Please let me know if you need any additional information. Thank you for using the Fiddler Forums.


    Eric R | Technical Support Engineer
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