Creation of the interception certificate failed.

6 posts, 0 answers
  1. Manny
    Manny avatar
    2 posts
    Member since:
    Feb 2014

    Posted 27 Feb 2014 Link to this post

    After clicking on Tools | HTTPS | Capture HTTPS CONNECTS, the minute I click the box next to Decrypt HTTPs traffic Fiddler throws the following error:

    makecert.exe returned - 1.

    Results from c:\program files (x86)\Fiddler2\MakeCert.exe -r -ss my -n
    "CN=DO_NOT_TRUST_FiddlerRoot,    etc, etc

    Error:  Can't create the key of the subject ('JoeSoft')
    Failed

    See attached screenshot.

    When I try to export the Root Certificate to the Desktop it throws the following error:
    The root certificate could not be located.

    OS:  Win8.1
  2. Eric Lawrence
    Admin
    Eric Lawrence avatar
    833 posts

    Posted 05 Mar 2014 Link to this post

    Please see https://groups.google.com/forum/#!searchin/httpfiddler/joesoft/httpfiddler/nsNNczdG2y4/MJ9s1sbyPc0J

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  3. Jacques
    Jacques avatar
    1 posts
    Member since:
    Feb 2015

    Posted 26 Feb 2015 in reply to Eric Lawrence Link to this post

    Hello Eric Lawrence,

    By installing the CertMaker in the add-ons list it should resolve the issue.  I tried and it is not working.  My environment is Windows 7.

    Could you propose another resolution?  I tried a lot of thinks indicated in your post without success.

    Regards,
    Jacques
  4. Eric Lawrence
    Admin
    Eric Lawrence avatar
    833 posts

    Posted 26 Feb 2015 Link to this post

    Hello, Jacques--

    To get help with this, you'll need to provide far more detail about your situation. For instance, after installing the CertMaker add-on, it's not possible to get the error message described in this thread, so I'm guessing that this isn't what you're seeing.

    1. What have you tried thus far?
    2. What exactly fails?
    3. What do you see in Fiddler's LOG tab?

    Regards,
    Eric Lawrence
    Telerik
     

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  5. John
    John avatar
    1 posts
    Member since:
    Oct 2015

    Posted 28 Oct 2015 Link to this post

    I had the same issues and what fixed it for me is this: 

    1. Navigate to

       %userprofile%\AppData\Roaming\Microsoft\Crypto\RSA

    2. Delete the contents of the folder.  (I did create a backup of the folder first)
  6. Eric Lawrence
    Admin
    Eric Lawrence avatar
    833 posts

    Posted 28 Oct 2015 Link to this post

    Hello, John--

    Yes, that tends to resolve the problem, but it's potentially risky. The procedure you describe deletes all of the user's private keys from disk; this can be entirely harmless, or very very bad (if the user had any keys for non-Fiddler certificates).

    These days, a safer and better choice is to switch to the Certificate Maker addon (or switch to CertEnroll as the generator).

    Regards,
    Eric Lawrence
    Telerik
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