FireFox 95.0.2. "Secure Connection Failed" on some sites

Marzipanogram · 22 Dec 2021 at 21:45

I updated to FF 95.0.2. (Windows 11 PC) and now certain "Jolly Roger" sites just give me a "Secure Connection Failed" message.
It appears to be because of TLS https://support.mozilla.org/en-US/k...fox-did-not-connect?as=u&utm_source=inproduct
I've tried configuration the bottom two "TLS" entries in about:config within FF, but it's not possible to alter the Max. and Min. settings.

It's nothing to do with my firewall, VPN etc. It's a FireFox problem.
I've tried Vivaldi (chrome based browser) and it worked OK.

Anyone else noticed this and maybe have a FF workaround?

Thank you.

Marzipanogram · 23 Dec 2021 at 15:32

RavenLunatic said:
I have been getting this for the last couple of weeks. I put it down to me upgrading my home network to 2.5Gbs causing a timming issue. I wasn't aware that it was a FF problem.
My work around is to refresh the page which usually works.

Refreshing the page doesn't work for me. I originally thought the site(s) had permanently gone until I tested it with my phone.
I've now switched to Vivaldi full time. Over a decade with FireFox, but it's time to move on.

Marzipanogram · 23 Dec 2021 at 17:26

Firegod said:
I have HTTPS only mode enabled and use TLS1.3 / TLS1.2 - I've not noticed any problems with sites reporting "secure connection failed". I personally wouldn't say it is a FF "problem" but more perhaps a website specific issue (or perhaps a localised issue to you, as the article does mention security software as a cause). Reading the support article it is pretty detailed as to why you are seeing that message. Having security.tls.version.max = 4 (TLS1.3) and security.tls.version.min = 3 (TLS1.2) seems reasonable and I wouldn't like to alter this to anything lower for safety.

Thanks for the reply.
I was using HTTPS only mode, but nothing worked.
I've given it up as a bad job.

Marzipanogram · 26 Dec 2021 at 13:31

Thank you Smogsy and Bouton Aide, for the help.

I've checked the SLLLabs site out. The site's certificate never ran out. It scored a B rating and failed the handshake test.
I checked the site (and another site I had problems with) out yesterday and they worked fine.
But both were out of action for around 4 days. So I'm not sure what went wrong.

I can't really name the sites here. But one of them has the Spanish translation of "friends" in the title.