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Secure connection failed and Firefox did not connect Firefox Last updated: 01/16/2024 39% of users voted this helpful

This article explains why you may see a Secure Connection Failed or a Did Not Connect: Potential Security Issue error page, and what you can do.

   If you see a Warning: Potential Security Risk Ahead error page, see What do the security warning codes mean? and How to troubleshoot security error codes on secure websites.
   To troubleshoot other error messages, see Websites don't load - troubleshoot and fix error messages. 

Table of Contents

   Secure connection cannot be established
       Secure Connection Failed
       Did Not Connect: Potential Security Issue
   Website issues
       TLS version unsupported
       HSTS required
   Security software conflict
   Incorrect system clock
   Other secure connection issues

Secure connection cannot be established

When a website that requires a secure (HTTPS) connection tries to secure communication with your computer, Firefox cross-checks this attempt to make sure that the website certificate and the connection method are actually secure. If Firefox cannot establish a secure connection, it will display a Secure Connection Failed or Did Not Connect: Potential Security Issue error page. Secure Connection Failed

A Secure Connection Failed error page will include a description of the error and a Try Again button. There is no option to add a security exception to bypass this type of error.

Fx97SecureConnectionFailed ~~~ The url gives me this can you help please its not bitdefender total security blocking it I dont think https://support.mozilla.org/en-US/kb/secure-connection-failed-firefox-did-not-connect?as=u&utm_source=inproduct

I just tried to open Firefox and got the message "The bookmarks and history system will not be functional because one of Firefox's files is in use by another application. Some security software can cause this problem". DO NOT redirect to this link

https://support.mozilla.org/en-US/kb/fix-bookmarks-and-history-will-not-be-functional?as=u&utm_source=inproduct&redirectslug=The+bookmarks+and+history+system+will+not+be+functional&redirectlocale=en-US

It is useless. I tried to restore 3953 items from a previous back up and received the message "Unable to process the backup file".

I am not interested in hearing how to prevent this problem in the future, because obviously creating backups do not work.

How do I check to see if the problem was caused by security software, even though I have not added anything?

1. I use a startpage called IGHome. That address is set as my default to open to. When it opens I notice that the address is not secure. When I add https:// in front of it, it does in-fact open, which is good. Even though I added that prefix to the address on the Internet Options page in my system, it still continues to open the old 'unsecured' way. I also cleaned IGHome out of my system before resaving it. Is there anyway to get my system to recognize the secure version? And, if I open any sites with passwords on the unsecured version, they DO open as secured so in reality I am still safe (even though my system is not opening the https site).

2. Also, on my IGHome page, there are 'Show Your History' and 'Show your Bookmarks' tabs at the top right in the toolbar. When I used to open them they would open almost flush right. Now they open almost in the center. Is there a way to make them open in their previous flush right location again?

Thank you in-advance for any time and assistance!

Sincerely,

Dana Desjardins Email removed for privacy

I've disabled all of my addons, cleared cache, and still youtube is broken for me. It works fine with Chrome still. Any ideas on how to fix? See attched screenshot.

On Weddnesday evening I switched on my desktop computer and was ligging into an on line drawing classsite which would give me access to a Class on Zoom when notification of an update for Firefox appeared on the screen. I think the message was that the update would be downloaded and then the computer would do a restart. I think the download occurred but not the restart. I was then logged onto the site and clicked to join the class. I was only on about 20 minutes as Zoom kept dropping outto the zoom login screen. After this happened about 5 times I gave up and switched the computer off. On Monday I logged onto aother zoom class via the came site and againthe Zoom class kept dropping me out to the login screen although a couple of times it went back in on its own. I have contacted the Zoom Help and seemed to be typing to a badly programmed AI robot and could not get it to understand I didn't want to know about setting up my mic and camera. Please be warned I'm retired and not good with electrons and IT speak etc.

Ever since Facebook started infesting the chats with end-to-end encryption (random chats get "Messenger upgraded the security of this chat. Messages and calls are secured with end-to-end encryption" without my permission or asking if I want this), any encrypted chats have audio and video calls disabled. I note that I have ONE friend for whom it didn't do this, I can still do calls with her. If I receive a call, I get a pop-up saying that to receive this call I must download the Messenger app (no way) or a browser which supports it. If I check what browsers it thinks supports this, it only lists Chrome and Edge. As far as I know Edge is just Internet Explorer renamed, the biggest black hole in security, I've never touched it. Chrome ignores industry standards, so I don't use it. Making Firefox the best, top browser available. It's the only browser I wish to use. Mozilla needs to look into how to get Facebook to stop blacklisting Firefox like this. Note that this E2EE garbage has only been infecting things for the last few months, before that I was perfectly able to do any calls I wished in Facebook Messenger.

I lost power today and when I had it restored, had a message that the Firefox versions were incompatible (I think it got interrupted during an update. Anyway, no internet access through Firefox, so I deleted Firefox thinking I could reinstall and all might be good. So far, not so good...

I was able to Google my way to install the extended release version of Firefox for dinosaurs but I lost all of my bookmarks. Is there a way to get this back? I would hate to start over finding the places I visit and also recalling old spreadsheets, documents, etc....

Any help would be appreciated.

Thanks ---

One of the Firefox profiles does not save logins and passwords, but other profiles of the browser at that same computer have not that problem. How can I solve this problem ?