Firefox Community Forum

Hello,

I have been using Firefox for many years and also have Bitdefender Security Premium running on my devices. Unfortunately, I am getting more and more messages like the following:

Function: Online threat protection

firefox.exe attempted to connect to ads.mozilla.org using an untrusted certificate. We blocked the connection because untrusted certificates are issued by unrecognised certification authorities.

However, I can confirm that Firefox and the add-ons are all up to date. But I also trust Bitdefender, as this message will not have come out of nowhere. What can I do to get everything working properly again? Thank you. Kind regards, NaIch

Translated with DeepL.com (free version)

Stupid mistakes were made - I reinstallted windows and when I opened firefox I realized, that I did not know my password and also was not sure about the mailadress. I finally found an account with my mailadress but reset the password - it said that all data in the account will be deleted if I do that.

I got the old files recovered, but everytime I copy paste the old key4, login and cert file... nothing changes withing the browser. If I copy the whole old profile folder and exchange it with the new one and then I open firefox it just says "profile could not be found" and then firefox closes.

Is there any chance of recovering my old saved passwords or did I screw up entirely ?

NOTE: I have marked this as "Solved" because I figured out the problem described below, and I fixed it. See my following message here for a description of my solution.

Original message starts here ...

I'm using Firefox 144.0 under Debian Linux. I've used Firefox on this machine for years with no problem. Firefox can easily connect to literally thousands of web servers on the internet, both via HTTP and HTTPS.

But now, I'm having an issue:

I started running a web server on the same machine that Firefox is running on. This server only listens for non-HTTPS connections on port 80. I am not using any proxy server with Firefox.

I can easily and directly connect to my local web server's pages from my local machine from Chrome, w3m, curl, and direct telnet connections to port 80 ... all of which are addressing the publicly accessible domain name for my local web server. However, However, Firefox refuses to connect to any URL's on my local machine, and it gives me the following explanation:

Unable to connect

Firefox can’t establish a connection to the server at [ my server's domain name ].

   The site could be temporarily unavailable or too busy. Try again in a few moments.
   If you are unable to load any pages, check your computer’s network connection.
   If your computer or network is protected by a firewall or proxy, make sure that Firefox is permitted to access the web.

In Firefox, I have all auto-forcing of HTTPS disabled by means of Don’t enable HTTPS-Only Mode turned on.

I get the same error in Firefox whether I connect via a URL like "http://MYFULLDOMAINNAME" or a URL like "http://AAA.BBB.CCC.DDD", where "AAA.BBB.CCC.DDD" is my machine's publicly accessible static IP address and "MYFULLDOMAINNAME" is the long-standing, publicly accessible domain name for my machine ... both with and without a suffix of ":80" on the supplied URL.

And again, all other browsers on my machine have no problem whatsoever connecting to my own local web server on this same local machine of mine using those same URL's.

And all browsers (Firefox and otherwise) that are running on other machines all over the internet have no problem connecting to that same web server via the same URL's that I described above

Also, I have no firewall rules on my machine which would block access to my own machine's port 80.

What could be causing this error in Firefox, and what might I be able to do to fix it?

Thank you very much in advance.

UPDATE: Just a bit more information. Looking at the web logs, I see that Firefox's request never even reaches my local web server. In other words, Firefox itself is not even trying to make a TCPIP port 80 connection to my local web server in the first place

Hi,

I use Firefox app in macos, android and ipados. The bookmarks across them are not synching automatically. I need to press sync manuelly to do. All apps are updated, all settings look fine. Please help me synch bookmarks across platforms. Thanks a lot.

When I went to type something it spelled out 123sexdate.com why me and my fiance uses the same email would that have something to do with it also what app or link is that even on

I seem to have lost all of my bookmarks & i have tried to Import and backup / restore in manage bookmarks tab but all i get is a message "unable to process the backup file" plus when i tried to bookmark a web page by clicking on the Star bookmark icon nothing happens now for some reason. Was there an update as this only just started around 2 days ago

All of a sudden I cannot check out using shop on my IMAC. It has worked for me for years and now all of a sudden it stopped. Not sure what settings to edit. I can go through the check out process, but when I press check out the page will not load. I just get a shadow & spinning like it's trying to upload but it never does. If I switch to Safari I have no problems, but I prefer Firefox. Any suggestions or solutions appreciated. Lorri

HOW MANY TIMES can Firefox lose my bookmarks......again and again and again. Restoring from a profile is stupid because all new bookmarks are still gone. This product used to be good...now it is so unreliable that I am switching to Edge which never loses my bookmarks. NO.....I DID NOT DO THIS!! YES, YOUR PROGRAM DID AGAIN. NO I ADDED OR DELETED NOTHING. IT IS IN FACT YOU!! Every time an update in installed I face this. I no longer have a single shred of confidence in this product. Every month or so...BAM....bookmarks gone again. RIDICULOUS. And you want donations for this?

I continue to receive this message when I open the browser. Fix "The bookmarks and history system will not be functional" error message

I have attempted to correct this with the various workarounds to no avail.

Anyone who can help with this?

A leak was detected on my account then Mozilla locked it. Every passwords were changed as I still got an "Email just returned" error upon trying to sign in, and now I end up with an "Unexpected error".

And to make sure that this has nothing to do with the plugins I have on my pc installation, I tried signing in on mobile phone as well. Same issue.

I have autofill turned on, and it works (almost). The address fields are completed, but left in yellow highlight, and when I try to submit the form, it isn't accepted. I have to manually enter and then delete a character for they yellow highlight to clear - and then the form submission works. It's happening with more sites now.

Is there a solution?

Hello,

I'm trying to access a dropdown menu on trafficjunky.com but the menu is not functioning correctly and will not load. When I select the dropdown, it opens a small blank white box that should fill with options, and I should have the ability to free type as well so I can search for a location. This does not happen, the only thing that happens is what you can see in the picture and free type is not functioning.

I have cleared cookies and cache numerous times, updated my browser, deactivated extensions, turned off performance settings, and have tried both troubleshooting and incognito modes as well. I am not running ad blockers or themes on Firefox.

Any advice you can provide is appreciated!

Thank you, Kyle

Good afternoon. When I try to send an email link from the Firefox the default comes up with the "New Outlook." I would like to use Outlook Classic as I have in the past. In your default there is now way to choose Outlook Classic only the "New Outlook." Is there a work-around to this. Thank you!

bold textSelected text on page, e.g. search terms, are a dark grey color with black text. I have changed every option on setting with no success. I don't seem to be able to specify the highlight. I have tried, I tried overriding web pages to use my settings, high contrast, and system colors (PC, Win 11). This also occurs in eb pages, e.g. the Amazon page.

Thanks Mike