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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

The horizontal scroll bars had been missing for certain URL in firefox since mid last year 2023. I just downloaded the latest version for windows 11 and it is still missing.

I have checked the settings > General > browsing > related to scrollbars and they are all checked, namely: - use autoscrolling - use smooth scrolling

But it is still missing! I generally use firefox for my work and Google chrome for my personal use - to compartmentalize my browsing content/history. Now I will have to ditch firefox and use chrome only for both work and personal if this is not fixed.

My Thunderbird email account always asked for a password to contact host. This request for password has disappeared the last coupleof days .The email is working fine. A couple of weeks ago I had a request from mozilla thunderbird to agree to an update alowing change in the computer . I agreed. Could this resulted in loss of password request ? I would like what happened . Thank you for your help. Kind regards Katrina

Code sent to my email about firefox pw change didn't work? tried 5 times!!! legally blind pls help me thx!!!

6765771967657719 now code won't paste? I had 10 min.s? 676577196765771956102634 I think by memory cause copy and paste won't work!!!

Thanks Deborah/Debbie Davis

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

Help! My main email address and another one no longer are listed when I open Thunderbird. I tried to reinstall my main email but was prompted that it already exists. I have not received any email since 7/23/2024. My main email is belaflom@belaflom.com.

hey, After the last 2 updates, my quick filtering (ctrl+shift+K) broke. It works very slowly, it freezes the entire program. Is there any way to fix this? I work on Windows 10, regularly updated

I'm on android 10 on a Galaxy note 9, and whenever I try to use the payment Autofill feature, it fails. The information from the card is simply not added to the form fields.

It doesn't matter what site is used, nor which card. I have verified that the card information is correctly saved by re-entering both cards. I've tested on multiple sites.

Firefox 129.0 (Build #2016035991), hg-2d113ed75bf0+ GV: 129.0-20240801122119 AS: 129.0

My cox emails opened in Thunderbird until a few days ago. Now a popup window asks for the password for each account. I checked the "security" section, and all of the passwords are saved. Any suggestions? Thanks.