Need More Info
Last Updated: 17 Feb 2021 09:31 by ADMIN
Created on: 16 Feb 2021 19:45
Type: Bug Report
can't install root certficate, not even manually

I've been trying to install the root certificate to decript https traffic with no results.


20:42:38:5197 Fiddler Running...
20:42:38:5202 Fiddler.Network.AutoProxy> AutoProxy Detection failed.
20:42:38:5202 AutoProxy failed. Disabling for this network.
20:42:38:5481 Windows 8+ AppContainer isolation feature detected.
20:42:44:4729 Assembly 'C:\Users\Mauro\AppData\Local\Programs\Fiddler\CertMaker.dll' was not found. Using default Certificate Generator.
20:42:44:4754 /Fiddler.CertMaker> Using .‰+˜ for certificate generation; UseWildcards=True.
20:42:46:0206 /Fiddler.CertMaker> Root Certificate located; private key in container '4f42d4e82d7f6c170e7a049cf6dfeeaa_8bf41fe8-e204-441e-8fc2-475cb85c8829'
20:42:48:8545 !Fiddler.CertMaker> Unable to auto-trust root: System.Security.Cryptography.CryptographicException: Access is denied.

   at System.Security.Cryptography.X509Certificates.X509Store.Add(X509Certificate2 certificate)
   at .‰.TrustRootCertificate() in C:\Jenkins\Fiddler_Windows\workspace\FiddlerCore\FiddlerCore.Shared\Common\Core\DefaultCertProvider.cs:line 965
1 comment
Nick Iliev
Posted on: 17 Feb 2021 09:31

Hi Mauro,


The error might be caused by different factors like 3rd-party security tool, lack of write/read rights and even lack of space. Check this forum post and also this one for possible solutions.



Nick Iliev
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