Firefox Support Forum

I wish to add a new PC to devices I am currently syncing (a "legacy" PC, a laptop, my iPhone). I can confirm from the legacy my correct password and can log in using it. I have installed the up-to-date Firefox on the new PC. When I attempt to log in to Firefox/sync on the new machine, it will not recognize the confirmed password. FYI, this is a new password created Aug 23. The new machine runs Win 11, the old Win 10.

Firefox shows a website as "most frequent" though I have not used the website since many months. Additionally, the history shows a visit for this website from this year that I did not do and on the other hand there are a lot of visits for the same website from last year that I remember but that are not in the history. What can have caused this and how can I prevent it?

Hello and great work so far Firefox team!

Currently, Firefox can be used in Windows from the command line to open any URL (start firefox www.google.com). Since any browser is expected to have Internet access to any website or IP address, this is a real security concern in case of default deny security for firewall outbound traffic.

Here is a hacker scenario: The PC has a list of whitelist applications allowed to connect to the Internet. This prevents lots of malware from connecting to their remote servers. However, malware can bypass that by listening on localhost and requesting Firefox to open the remote server. This way the malware sends and receives data with the server using Firefox after requesting an URL with the malware local port specified as query parameter.

This can be avoided with a special about:config option that completely disables command line processing. I don't know if that's entirely possible, but preventing Firefox to start URLs from command line or explicitly requesting Internet access for static HTML files should be enough.

Note: I use NoScript and that helps in this case, but it is not a bullet proof solution. It may be possible that one of the CDN I have allowed gets hacked with malicious JavaScript. If the malware is already on the PC, it can connect to the remote server using the hacked CDN that is allowed in NoScript. This is a two piece attack, but I still think that using Firefox to access to random URL from command line is dangerous and should have an option to be turned off.

I disabled all extensions today to troubleshoot a website and all of my Firefox container data is GONE!

Luckily, I have a second computer with Firefox that was synced earlier today before I did this.

I have put that computer #2 into airplane mode and have not opened Firefox in fear that a new sync will overwrite the data.

So far, I have saved "containers json" and "cookies sqlite" from computer #2 profile folder

Then, I backed up "containers json" and "cookies sqlite" from computer #1 profile folder (this is the computer I'm using now with the broken containers)

I have placed "containers json" and "cookies sqlite" from computer #2 and overwritten them on computer #1

The container names are back, and some of the containers remember the site logins, but some don't, and none of the websites will open in the specifically chosen containers from before.

Is there a way to restore the sites that were logged in and which sites auto-open with the specific container?

Thank you in advance

(This question should be directed at Google too.) I was watching a video the other day on Archive.org and the name Kevin Farley was mentioned; spoken, no subtitles/annotations. I paused watching the video and did a Google search on my Firefox. I typed in the word "Kevin" and the first suggestion was Kevin Farley. How is this possible? That can't be the first suggestion unless the video player on Archive.org and Google are communicating with each other. Anyone can think of several Kevins who are actors such as Kevin Farley, but more well-known than this brother of Chris Farley who, for that matter, was very well known. I don't believe that there are hidden microphones inside my computer or anything like that, but – in all seriousness: how the heck does this thing work? Is Google listening to me? And if it is, that means Firefox is allowing it to listen to the stream of audio through my sound card. (At least the line out. Maybe I should try and see whether the line in and mic in are doing the same and play a vocal sample from an external source/device saying "Kevin Farley" or speaking those words through a plugged-in microphone and see how Google responds to that.)

On Firefox's settings (privacy) I have not allowed any site to use my microphone, speakers or camera. On my sound device's settings videos, music and everything I do audiowise is going through "microphone", although I'm plugged in on the rear panel of my PC only to line in and line out i.e. when I'm playing music on WinAmp, it shows that a signal is going through the microphone as it is going through my output. (If I try to disable the microphone, then I can't capture any signal i.e. I'm unable to record sound off a video clip or from my external audio gadgets.)

Not quite sure whether this is a problem with Google, Mozilla or my PC's sound card or with all of them, but it still is an interesting issue.

Why, why when being prompted to update, updating fails and I abort (only real choice) is the previous version of Firefox removed? This happens all the time and every time I have to do a complete new install and redefine all my Quick Access menu items. If this happens one more time, I will use someone else's PDF reader. Updating should not be that hard. I have administrator privilege's so why does your software updates fail?

When uninstalling Firefox developer edition my anti virus firewall popped this message:

"Firefox Developer Edition Helper does not have a valid digital signature"

Filename: Un_A.exe

Does anyone know anything about this?

Hi Moziila, Whenever my Firefox browser updates, I lose extensions in my toolbar. They are placed in the puzzle shaped item in the toolbar. Is there a way to prevent that happening?

Thank you, Richard

Good morning I was using firefox on windows 8.1 I moved to Windows 10 and after logging in to my Firefox account, my bookmarks and passwords from the Firefox sync service were not restored.

please help,

Hello Team,

I have installed Smart Card Minidriver on Windows Intel and installed firefox 64 bit version intel based. Mutual TLS is working as expected with Minidriver (Microsoft Base Smart Card Cryptographic Service Provider). Tried to use PKCS#11 dll and it is also working.

In the same way,

I have installed Smart Card Minidriver on Windows ARM64 and installed firefox ARM64 bit version ARM based. Mutual TLS is not working as expected with Minidriver (Microsoft Base Smart Card Cryptographic Service Provider). But when tried to use PKCS#11 dll and it is working.

I have questions here:

Firefox ARM64 on Windows ARM is not working mutual TLS with Microsoft Base Smart Card Cryptographic, Service Provider, Is this supported?

System Info, Windows 10 Home 22H2, Acer Aspire V15, 16G Ram, 1 SSD 256MB Drive C:, 1 HDD 2TB Drive D:

This is a Question for the Developers, and other Hackers!! Video Streaming Not Playing (Disney/Hulu/Prime/Vudu) Anything that uses Digital Rights Management (DRM) Content... YouTube works fine.. oddly..

I troubleshooted Resets,clearing cache, spoke to support from Disney on the phone, and finally reinstalled windows. Everything works.. Then applied my drive space hack. And everything is broken again.. Simple Hack, got the idea from Linux. I changed the C:\Program Files & C:\Program Files (x86) into Hard-links/Junctions to the D:\Program Files & D:\Program Files (x86).. And now the videos will not play... There must be some coding that monitors the Drive letter, maybe for pirating protection, I have no Idea... But I'd love to at the very least know why this happens.. I will plan to upgrade my SSD in the near future to prevent the need to move Program Files, It's just really annoying that a simple thing like steaming is now broken because the programs are installed on the D: Drive... Like WTF is going on.. Anyway, if someone has some incite into why, and a possible work around that would be great.

Thank-you very much if you read this!!

Like many people, I have professional and personal email accounts. A long time ago, before Pocket was a part of Firefox, I created a Pocket account associated with my personal email address. And, at some point I associated Firefox with my professional email address. Now that Pocket is a part of the Firefox family and there is a push to use the Firefox login as the Pocket login, I'd like to unify these accounts. The Pocket login using my personal email address has clearly now become its own Firefox account. So, when I try to make one email address the secondary for the other Firefox account, that is disallowed with the popup saying that the account (associated with that email) already exists. Is there a simple solution? Or, is the easiest way to continue having two Firefox accounts, one I only use for Pocket?

Hi, everyone. I hope you will be doing good. As we have a website about delusion calculator which is properly working in other browsers. While checking it in the firefox I found that the website is so lazy and break down while during the loading time. Could anyone here can guide me about this issue?

I have multiple accounts for a particular site and have usernames and passwords saved in Firefox for all of them. I use one of those accounts most of the time and use the others occasionally for particular tasks. I would like Autofill to autofill that main account's information, but it defaults to autofilling one of the other accounts and I have to manually select the one I want from the dropdown before logging in. Is there a way to select which account information is autofilled, or some trick to get it to show the right account by default, like deleting and re-adding all the other accounts?

I continue to receive these notices from Bitdefender, what is this about? "firefox.exe attempted to establish a connection relying on an expired certificate to pocklington.mitremedia.com. We blocked the connection to keep your data safe since websites must renew their certificates with a certification authority to stay current, and outdated security certificates represent a risk."