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Firefox not importing certificate

Aaron | Last updated: Oct 15, 2016 04:49AM UTC

Im trying to import the certificate cacert.der on firefox. When i click import nothing happens. I have made sure i do not already have it on.

Liam, PortSwigger Agent | Last updated: Oct 17, 2016 08:24AM UTC

Hi Aaron Thanks for your message. Have you followed the installation instructions in our Firefox tutorial? - https://support.portswigger.net/customer/en/portal/articles/1783087-installing-burp-s-ca-certificate-in-firefox Can you see the PortSwigger Cert in the 'Authorities' tab?

Burp User | Last updated: Oct 31, 2016 05:42PM UTC

Even I am facing same issue. After I select import and select the cacert.der file, nothing happens. No failure or success prompt. Just nothing happens. I cannot find Portswigger in the Authorities tab too. Dont know what to do from here.

Liam, PortSwigger Agent | Last updated: Nov 01, 2016 10:37AM UTC

Hi paU1i Have you tried installing the certificate in another browser? Do you encounter the same issue?

Burp User | Last updated: Nov 02, 2016 05:16PM UTC

I just want to chime in and say I am having this same problem. It worked fine before but for some reason it stopped working. Firefox is not saving the portswigger certificate. It works for chrome and IE, but not firefox.

Liam, PortSwigger Agent | Last updated: Nov 03, 2016 08:42AM UTC

Hi Paul I'm using the latest version of Firefox on OS X. I've been unable to replicate the issue. Which version of Firefox and which operating system are you using?

Burp User | Last updated: Nov 03, 2016 05:59PM UTC

I am on Windows 10 Enterprise and using firefox 49.0.2

Liam, PortSwigger Agent | Last updated: Nov 04, 2016 09:28AM UTC

Hi Paul We've just tested Firefox 49.0.2 on Windows 10 and had no issues installing the PortSwigger certificate. Have you tried using another browser?

Burp User | Last updated: Feb 19, 2017 02:31AM UTC

I have the same issue. I am using OS X and Firefox 52. How did you resolve the issue? I also tried the instructions from youtube video https://www.youtube.com/watch?v=LwWl4d9zH_w but same result. I still get the exception whenever I navigate to a https site. I do not see Portswigger CA in the certificates list in Preferences-> Advanced-> Certificates ->View Certificates.

Liam, PortSwigger Agent | Last updated: Feb 20, 2017 09:16AM UTC

Hi Rajagopal Thanks for your message. Are you having the same issue using the latest stable version of FireFox? (51.0.1)

Burp User | Last updated: Apr 04, 2017 10:33AM UTC

I faced the same issue, I just updated Firefox and got the latest version like 52.0.2. Now if we download the certificate and import it. Observe that it gets imported successfully.

Liam, PortSwigger Agent | Last updated: Apr 04, 2017 10:39AM UTC

Hi Jaya Thanks for your message. Just to clarify, you downloaded a new certificate and it imported successfully? Are you able to proxy HTTPS applications?

Burp User | Last updated: Aug 31, 2017 08:11AM UTC

How did you guys resolve this? I have the same problem all of a sudden. Yesterday it still worked, but today the certificate has disappeared from the certificates in firefox. When I import the certificate, it does not show up in the certificates of my firefox (52.0.2 currently). I therefore get the "Your connection is not secure" error on every https site when the burp proxy is enabled.

Liam, PortSwigger Agent | Last updated: Aug 31, 2017 08:38AM UTC

We've just tested the latest version of Firefox and been unable to reproduce your issue. Have you tried updating to 55.0.3? Additionally, which OS are you using?

Burp User | Last updated: Feb 23, 2018 09:10AM UTC

i had the same issue but i have finally solved it by refreshing firefox then re importing the certificate. it finally appeared under firefox certs.

Liam, PortSwigger Agent | Last updated: Feb 23, 2018 10:56AM UTC

Have you tried removing and reinstalling the Burp Cert? And refreshing Firefox? Can you see the certificate in the Firefox cert store?

Burp User | Last updated: May 03, 2018 05:47PM UTC

Same problem 5/3/2018 with Firefox 59, Windows 10.

Burp User | Last updated: Oct 14, 2018 09:18AM UTC

I am having the same problem.i cannot see burp cert in Preferences-> Advanced-> Certificates ->View Certificates whats the problem?I am getting errors in https sites

Liam, PortSwigger Agent | Last updated: Oct 15, 2018 08:21AM UTC

Eric, have you followed the installation instructions in our Firefox tutorial? - https://support.portswigger.net/customer/en/portal/articles/1783087-installing-burp-s-ca-certificate-in-firefox

Burp User | Last updated: Nov 04, 2018 08:13AM UTC

Hello, I'm experiencing the same issue, although i've tried the steps mentioned in the link above :: "https://support.portswigger.net/customer/en/portal/articles/1783087-installing-burp-s-ca-certificate-in-firefox" :: but Still nothing is working .. i tried on different firefox versions on windows 7 and linux distro. (kali), and none of them is working. Best regards

Liam, PortSwigger Agent | Last updated: Nov 05, 2018 09:18AM UTC

Akkosh, are you encountering any error messages? Have you tried installing the certificate on IE?

Liam, PortSwigger Agent | Last updated: Dec 17, 2018 08:23AM UTC

Thanks for letting us know Jean.

Burp User | Last updated: Jan 07, 2020 01:38AM UTC

Firefox 71.0 on Linux: the same issue: tried all the hints, without success

Burp User | Last updated: Jan 07, 2020 01:41AM UTC

Afterwards it did work (working in the right tab)

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