Security Certificate not trusted

2 posts, 0 answers
  1. Jamie
    Jamie avatar
    1 posts
    Member since:
    Jan 2019

    Posted 31 Jan 2019 Link to this post

    We have a web based application that renders inside an iFrame. When using Fiddler and decrypting HTTPS, there is one iFrame that generates the message "The security certificate presented by this website was not issued by a trusted certificate authority". If we uncheck the decrypt option or use the application without Fiddler running we have no errors. Looking at the URL it is trying to browse to a website that has a Fiddler DO_NOT_TRUST certificate in the user personal certificate repository. I have clicked on the Actions button on the HTTPS tab and chosen the "Trust Root Certificate" option but that made no difference.  Any ideas why this one site would reject the Fiddler certificate?

    Thanks in advance

  2. Simeon
    Simeon avatar
    241 posts

    Posted 04 Feb 2019 Link to this post

    Hello Jamie,

    It is possible that your application uses Public Key Pinning.

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