Firefox doesn't allow exceptions for sites like Google that send a Strict Transport Security (HSTS) header. Otherwise, it's wouldn't be very strict, would it?

More importantly, why would you get a different certificate for advanced search than regular search? Isn't it on the exact same server?

Regular: https://www.google.com/

Advanced: https://www.google.com/advanced_search

Well, jscher2000, why would I use a browser that doesn't permit me to get to sites I need?

Firefox DID have the "Add Exception" button. So, Mozilla has become so purist that it will leave users HANGING?

I've already decided to bite the bullet and COMPLETE my configuration of Chrome and Safari and forget Firefox ever existed.

Somehow, I think the Firefox 'marketshare' is about to tank even more if this inflexible attitude persists.

I've SUPPORTED Mozilla since 1996. Apparently Mozilla no longer supports USERS.

NOT use Google search? Are you blinking CRAZY? Does Mozilla now think it's GOD??

You are entirely right that plain www.google.com is also blocked. Since most of what I do has to do WITH Google sites this is simply impossible.

Hi Paul, certificate verification and HSTS behave the same in 57 as in dozens of recent versions. So we have a lot of experience helping users troubleshoot. Here's how to figure out the source of the problem.

Click the Advanced button and look for a CODE_IN_ALL_CAPS. If the code is SEC_ERROR_UNKNOWN_ISSUER then please see the following article for common explanations:

How to troubleshoot security error codes on secure websites

Do any of those seem to apply to your system?

If not, click the SEC_ERROR_UNKNOWN_ISSUER code and Firefox should display a coded version of the certificate you can copy/paste into a reply. Then a volunteer can submit it to a decoder like the following and see who is listed as the "Issuer" of the certificate.

https://certlogik.com/decoder/

If the code is something else, please copy/paste the full error description from the Advanced section into a reply. Thanks.

Well, jscher2000, I had just deleted the FF app and let Hazel trash the related files. Clearly it will be FAR easier for me to go to Chrome and Safari. All my bookmarks and bookmark toolbar folders were already there and LastPass has my passwords.

Note that I've always had problems with commercial, government and other sites that were not compatible with the latest FF, making it impossible to transact business with them. In those cases I had to go to Chrome anyway.

Might as well just start with Chrome in the first place. Note that I never have to debug IT!

Give me some REASON to STAY with Firefox - I mean, 20+ years of faithfulness and ADVOCACY is quite a long time.

Libertarians aren't especially fond of being forced into anything.

This is all I've got: https://www.mozilla.org/mission/

Do you have Time Machine backups?

Sort of. I'm using SuperDuper! and just wiped out my backup SSD to run a fresh baseline backup. So, no.

jscher2000, I am not a web technologist. I am not a purist. I moved to Firefox from Outlook for all the good reasons that existed then - INCLUDING the ability to configure. I LOVE to configure.

I see Chrome DOES have tab management extensions available and tab coloring extension. NOT exactly what was written for Firefox and I might not even use them. But they at least exist.

All that 'purity' doesn't help me get my WORK done, jscher2000. And getting work done is the bottom line.

In other words, you HAVE no answer. I hate to say goodbye. I'll hate it even more if I lose Thunderbird in the same way!

jscher2000 said

This is all I've got: https://www.mozilla.org/mission/ Do you have Time Machine backups?

By the way, jscher2000, exactly HOW is this new version putting "people first"? You DO realize that quite a lot of us feel like we've just been dumped into the trash?

I DON'T see how this enables me to "shape my own experience" or where it gives me any independence. IN fact, it's done quite the opposite!

jscher2000, I would VERY much PREFER to be PART of the discussion and NOT to be - departing. But I can't see how that can happen now.

If you or anyone else SEES a way, let me know.

You don't seem shy about involving yourself in a discussion and as you said, no one is going to tell you what to do.

I don't understand what you want from us. Support volunteers do not speak for Mozilla or plan future releases, we just try to help users get the most out of the Firefox we have.

I understand the issue, jscher2000. The problem here is who DO I connect with? Stable for me means everything I use WORKS as it always has. Mozilla doesn't seem to understand a user's view of stable.

I was ranting at the manager of Mozilla user advocacy, and he OFFERED to discuss, but it never went any farther.

It's a bit difficult NOT to rant when someone has pulled a rug out from under you and no one cares. I really don't buy "it's all for your GOOD!"

Well, once I'm settled in Chrome and Safari, perhaps it WILL have been all for my good.

Certificate errors can be for a variety of reasons. For example a wrong date set on OS. A antivirus client inserting its own certificate and causing errors instead. A proxy is in use. None of these issues have been connected to any Firefox version,even Fx 57.0.