Secure Connection Failed” after SSL certificate was re-issued – cannot clear cached certificate

Hi Jamie,

To help us understand better, could you please provide a screenshot of the specific error page you are seeing in Firefox?

If you click on the "Advanced..." button, it will reveal a specific Technical Error Code.

Hi George

See attached screenshot of the image which I have seen a hundred times in the past 36 hours, I did a search for J3 Private Tours on Google and clicked on many of the results, same error message

also what advanced button am I supposed to click? it is 4,30am in the morning here and I am rather fuzzy!

Hi George

Seee image attached

will this help

Hi Jamie, none of the subsequent errors are related to certificate issues. What you're seeing is probably just your old deployment now not responding correctly, and the DNS service you've used is returning their/your cached results that might have been set on the old provider.

For most people around the globe, this would show just fine.

It's just that you might have cached the old rules with the DNS provider you have set in Firefox that it will take a little longer for you to resolve over time now.

(You can try going into Settings, looking for "DNS over HTTPS", and disabling/enabling that feature, or changing the provider offered to someone else, which should flush things for you enough to see the live deployment now.)

Hi George,

I have done this twice and it does not work

I tried this

It’s currently set to Custom with Cloudflare. Change the provider:

Click the dropdown that currently says Cloudflare (Default) Choose a different one (for example NextDNS or Quad9 if available) Close Firefox completely Reopen it and test the link again

If NextDNS / Quad9 aren’t listed, just pick whatever other option appears in the dropdown.

So back to square 1

I just want to clarify, that this is a specific issue with Firefox, I do not have the issue with Chrome or Edge

thanks

Jamie

Possibly because you haven't cached your now defunct endpoints in those other browsers before you switched the providers etc.

If you're so inclined, you can type about:networking in a new tab and go to the DNS pane to see where the host is pointed, and push the button to "Flush DNS cache" if that makes any difference.

Hi George,

Thank you for the suggestions.

I have now tried all of the steps you recommended:

Toggling DNS over HTTPS (Off, Default, and Custom with different providers) Flushing the DNS cache via about:networking

Unfortunately none of these have resolved the issue. I am still receiving the same error in Firefox (both normal and Private windows). The links continue to work correctly in Chrome on the same computer and on mobile devices. Is there anything else you can suggest that might clear this persistent problem? Thanks again for your help. Jamie

Hi

This support article should help:

https://support.mozilla.org/en-US/kb/secure-connection-failed-firefox-did-not-connect

Hi Paul,

Thank you for the link.

I have already been working through this issue in detail with George. We have tried all of the relevant steps (clearing cache and site data, Private Windows, toggling DNS over HTTPS, changing providers, and flushing the DNS cache via about:networking). None of them resolved the problem.

The support article you linked covers the standard causes, but does not address the specific situation I am experiencing, where the same domain works correctly in other browsers on the same computer and on mobile devices, yet continues to fail only in this Firefox profile.

A generic support page does not offer a solution in this case.

If there are no further specific suggestions, I will leave the matter here.

Best Regards, Jamie