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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 have had this CPU for 8 months. I have had issues from day 1 with the stock Fedora install of Firefox where text is missing and some green and/or pink boxes appear where the text boxes should be. This has happened with all versions up to 129.0.

This has only been happening with Firefox. Vscodium, (chrome based) Brave and every other Wayland application including foot and freecad render correctly. it is only firefox and only firefox with this GPU. If I run Firefox under qemu without eGL then the rendering is good. If I run it under qemu and enable the virtioGL driver I get the same issue.

I attach a sample of a screen shot that shows that was captured from the frame buffer. In the bottom left corner, you can see quite a few characters missing. This happens randomly and sometimes goes away when scrolling.

I have seen other issues that say that it is a hardware problem, but I am not convinced. This happened with mesa-24.2.0. Find the glewinfo attached below: (Glewinfo log is very long, uploaded to Pastebin for better viewing) https://pastebin.com/raw/1NMnAjmc

For the last 2 weeks I started having problems with Firefox working consistently. Sometimes only tabs crash, sometimes Firefox crashes. It is not tied to any actions, a tab can crash even if you don't perform any actions in the browser. I have tried clean install on Fedora and Vanilla OS, native and Flatpak packages. The result is always the same - tabs or Firefox crashes every few minutes.

Sponsored Suggestion on the home page sucks. I don't find a way to remove it on 115.13.0esr (64-bit). I'm sad to see this practice getting implemented in my favorite browser.

I recently updated to 129.01 (64bit). Now Firefox keeps crashing, especially when I am trying to fill out an online form. Does anyone else have this issue? Any suggestions on how to resolve?

I ONLY want to use Firefox 55.0. My computer doesn't like your modern Microsoft type of Browser, Please supply ONLY FIREFOX 55.0.

Thank you , this is my 4th., Fourth request. Or do you prefer I use Opera Browser, it's up to you Firefox. Accommodate your user or lose business.

Charles

Hello, I noticed that some plugins that claim of MPL 1.1 License is actually close source, furthermore, some of those even have “Recommended” tag. Since this is a big misleading considering these plugins actually have very broad permissions, I consider those plugins as abuse. I reported them 1 or 2 months ago but no response. I don't want to list those names out in case it was just the author selected a wrong selection, but i do believe that the author should correct that, and the more important thing is Mozilla should check this more carefully.

Currently on the latest version. Either this version or a version before seems to have broken a functionality that's been there for years. With the search bar, you can have it empty, and select a search option, say, Youtube, and it'll open up YouTube. If you have a search term in the search window, obviously it'll open youtube in the search page with those search terms. I've used this for years and years to quickly go to pages such as YouTube, Amazon, etc, without having to have a separate bookmark.

Now, if you have the search bar empty and click on YouTube, or Amazon, or any other installed search option, it doesn't default open that page. It only opens when you have something typed into this.

Idk if this is a "feature update" or bug, but it's worked the same way for years, and now no longer does.

Version 128.0.3 (64-bit) What’s new Mozilla Firefox for Linux Mint

When I visit a page which contains a Google Doc spreadsheet or try to open a Google Spreadsheet the page often fails to render properly and what I see is my desktop background instead of the Google doc element or Google doc sheet. Please see attached. This has been happening for ages and I resorted back to Chrome for such pages but now I'd like to see if it can be resolved.

I'm using Firefox 129.01 (64-bit), trying to log in to my Tufts Health Plan account, and get a security warning (screen shot attached). Customer Service at Tufts Health Plan tells me that I should use Chrome.

Should I ignore the Warning and proceed?

Everything was fine, then one recent day - BAM - my logins and passwords are gone.

The profile is otherwise fine, everything is as expected. Logins.json (243K) is fine, all the logins (last id is 459) are there, they just don't show up in about:logins (except for new ones I added since the disappearance).

When opening about:logins, browser console reports:

LoginManager: Getting a list of all logins asynchronously. LoginManager.sys.mjs:395:14 Login storage: Returning 447 logins for specified origin with options [object Object] storage-json.sys.mjs:704:10 Login crypto: Failed to decrypt cipher text of length 92 with error NS_ERROR_FAILURE. crypto-SDR.sys.mjs:179:12 NS_ERROR_FAILURE: Couldn't decrypt string crypto-SDR.sys.mjs:197

   decrypt resource://gre/modules/crypto-SDR.sys.mjs:197
   decryptLogins resource://gre/modules/storage-json.sys.mjs:966
   map self-hosted:175
   #decryptLogins resource://gre/modules/storage-json.sys.mjs:948
   InterpretGeneratorResume self-hosted:1412
   AsyncFunctionNext self-hosted:799

Login storage: Could not decrypt login: {c97cc68e-9bf9-4af9-a7f6-e9248bf590ee}. storage-json.sys.mjs:972:20 ... etc for each subsequent login

How can I get my logins and passwords back?

Thank you, eljay

I'm using FireFox 129 64bit on Windows 10. I have Google set as my default search engine.

Lately, when I type search criteria into the address bar and press Enter, nothing happens. And if I then try to navigate to google.com at that time, it just doesn't load at all. This doesn't happen every time, but it has been happening often enough to be annoying. So I just load up Yahoo instead to conduct my search.

No other site has this problem.

Is this a problem with google.com itself, or with Firefox's handling of it?

Firefox Version 129.0.1 64 bit Windows 11. When I am in a New Tab, and I do a search (Google is my search engine) the results do not display. I type in search words, I hit Enter, and the screen does a very quick blip, and then nothing. This is very frustrating. I have wasted too much time trying to figure it out. It does not do it all the time, but most of the time. This started with the latest Firefox update. Is this a Settings issue?

I updated my password but now when I go to sign in (since an updated password signs out on all accounts) it won't stay signed in ever on my laptop. I input the password, then the email confirmation, then the authentication, and it says I'm signed in but when I go to my account is disconnected again. I've tried many times. I've also cleared the cookies and cache. Any advice?

Hello,

I would like to complete overhaul my pc again and for this matter Im quite dependant on my firefox saves of cookies / bookmarks etc.

the only issue is, the password i created using my account years ago is something i have absolutely no idea of anymore, ive been on the same computer for ages so luckily i never needed it again to sign into firefox, so you can probably see my issue here.

Is there any way that i can provide enough evidence that this is my account that i can finally reset this password and be able to reset my pc?

When attempting to access or refresh my online brokerage page I get a white spinning circle. It seems to go on for 30 seconds or so. While it is present the page is dysfunctional. I had recently changed some settings or a 3rd part program made some changes. I know not which setting or other may cause the spinning circle to be evoked. There is a break in the circle at about 3:18...that's the part that spins.

Dear Mozilla team, as a old fan from early days of Mozilla Firefox, Im quite dissapointed with the same issue I am facing with Firefox browser. Even I created my profile, which one you can check from which year has been created, even after I synchronised all my bookmars, passwords etc etc, still no data is restored. I formated my laptop last week and thought that this time, with syncronising I will save a lot of time buut veery dissapointed again. STILL I am not having back my 100+ login details saved on Firefox. Also tabs. Now, on my browser promts taht my account is all syncronised but still blanco browser, with not a single saved data!

I will appreciate your help to get back my data, as soon as possible.

Regards, Enis Jusufi

Please advise how to I locate and edit (remove incorrect/old auto-fill items). I click a wrong one on an order and it it going to an incorrect address. Plus there are other very old addresses in there that need to be remove. Any help is appreciated. Thanx

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?

t's been a nightmare. My Firefox keeps crashing, and it's driving me crazy! I can be in the middle of something important, like researching for a project or catching up on my https://dpforboys.com/ favorite shows, and suddenly, bam, it's closed. No error message, just gone.

I've tried everything I can think of:

Reinstalled Firefox multiple times Cleared cache and cookies Disabled extensions one by one Updated my graphics drivers Checked for malware Nothing seems to work. It's like Firefox has a mind of its own, and it's determined to make my life difficult. I'm starting to think it's a hardware issue, but I'm not sure.

I need help! Any suggestions would be greatly appreciated.