Executable's Web Calls Rejected when Fiddler 4 Capturing HTTPS/Decryption

2 posts, 0 answers
  1. Justin
    Justin avatar
    1 posts
    Member since:
    Oct 2017

    Posted 18 Oct 2017 Link to this post

    Hi - I have an application (.exe) that was written in Python.  It makes a HTTPS call out and data is returned in JSON.  With Fiddler running, I can run the program, it makes 2 web calls and bring back data.

    As soon as I enable Fiddler for HTTPS and Decryption, the program won't return data.  

    I enabled the CERT from Fiddler and made sure the proxy was correct in my LAN settings.  Any ideas?  (Windows 10)

  2. Alexander
    Alexander avatar
    383 posts

    Posted 20 Oct 2017 Link to this post


    Does your application trust Fiddler's root certificate? If it doesn't then no HTTPS call could be made. You have to make sure that the certificate store your application uses contains the Fiddler root certificate as Trusted Certificate Authority.

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