Diễn đàn hỗ trợ Firefox

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

Comments on YouTube videos are no longer visible after Firefox version 115.10esr update. They do however work on my other computer which also has Firefox but not an esr version since it has a more current version of windows. I tried deleting all cookies and cache, starting in safe mode, disabling ad-blocking on YouTube but nothing worked. I'm thinking of rolling back to the previous update but would rather have this problem fixed.

After the browser update earlier today I cannot log into 'You Tube TV'. The browser keeps asking for my email and password over and over and never signs me in. It keeps telling that I am signed out and need to sign in, over and over. I cleared my cache and cookies. I changed my sign in from my yahoo email to my gmail account and it still will not work. If I use the chrome browser it works fine. Please Help.

best regards,

john loomis jr.

When trying to download a college lecture, instead of downloading, the file opens and runs in a new tab. In General Settings "Save files to" is set to "Downloads" and "MP3 file (audio/mp3)" is set to Save File. This worked fine for several years until the last few months. It currently works correctly in my Chrome browser, but I prefer using Firefox.

Microsoft Security Essentials detect multiples times Trojan in Firefox setup. By Uninstalling and reinstalling, the issue was not resolved.

Refer screenshots - https://prnt.sc/Ws33iJcTrTf4 and https://prnt.sc/qGtwazGiX9ft

Category: Trojan

Description: This program is dangerous and executes commands from an attacker.

Recommended action: Remove this software immediately.

Items: containerfile:C:\Users\SYSCOM\AppData\Local\Mozilla\Firefox\Profiles\8dgf2yxz.default-1714042762339\cache2\entries\DC4B6FD7DF61D36E6E04BFC4DB2700E143AD5C51 file:C:\Users\SYSCOM\AppData\Local\Mozilla\Firefox\Profiles\8dgf2yxz.default-1714042762339\cache2\entries\DC4B6FD7DF61D36E6E04BFC4DB2700E143AD5C51->(GZip)

Website loaded without any problems for months until I get this error message out of the blue; see screenshot below.

Did try Java toggle on-off extension but the options button is not displayed on the extension that would have enabled me to enter URL of site in blacklist text box.

I cannot begin to express how frustrating this change is... and I struggle to comprehend why anyone would introduce this by writing it into software, but I'm sure it has something to do with money and profits.

There was a time when you could do a search and get a list of results, and then view a specific listing, and then return to your search page and view another listing. however, those days are evidently gone, as now when you return to your search page, it's slightly different results in a different order. Most are there, but some are missing entirely, and the ones that remain are varied slightly. Whaaaat for!? It is truly a form of torture.

Now in fairness I can't tell if it's the browser (Firefox), or the search engine (Duck Duck Go), because I am unfortunately not a developer. However, whatever is causing it should be fixed out of a sense of social responsibility to the greater good.

If anyone knows why this happens and knows how to fix it, I would be sincerely grateful if you shared the solution.

E

Using Firefox for webmail, There used to be an option to spellcheck a "Composed" message before sending it. Probably after a recent "upgrade", that option seems to have disappeared. True? Can I get the facility back in some way?

FF doesn't reliably open my last session. It used to but for nearly 18 months now it has become hit and miss. I have FF docked on my taskbar (Win 7 sp1) when I click it some times it opens all my tabs (I have it set to do that) but more frequently it doesn't and just opens one tab. Usually I catch it and in history select the tab showing many other tabs and I get it all back, but this doesn't always work like today, no option to do that because there's nothing there. When is it likely to be fixed, I've been complaining about this for months. I've even suggested FF collects a stack of last sessions (say 20) each time a session is closed and have a fixed entry for that in the menu, but nothing seems to change. I'm heartily sick of it, it's such a basic requirement of any browser and yet with FF it's just a pain in the neck.

why everytime i use firefox the default web address is: https://hao.360.com/?src=lm&ls=n077c1cd59a

1) Youtube stalls out. Seems to be preventing or blocking the front ad from running, ... but wait long enough, Youtube video will play. This happens on all my computers, Win 7 and Win 10. Problem been going on the last 30 days.

2) In Win 10, Firefox browser never shuts down when I close it. Must go into Task Manager & do a "End Process" to kill it. I do make sure Microsoft Edge Browser is Disable. It wants to run all the time too. Thanks for your efforts. Been using Firefox since 2002.  :)