Diễn đàn hỗ trợ Firefox

When i click on the lock icon in the address bar, nothing happens (I would expect to see the encryption and certificate, but no widget opens). When I right-click into the page and select "View Page Info", "Security", "View Certificate", no certificate exists. Only generic info is shown (Servers+Authorities). Also an error is reported in the system log, confirming that no certificate exists: JavaScript error: chrome://browser/content/browser-siteIdentity.js, line 642: TypeError: issuerCert is undefined

Questions:

• Why does Firefox show the lock icon while no certificate exists?

• How does Firefox establish a secure connection without having a certificate? (From my understanding a certificate is needed for TLS to work.)

Version used: Firefox 78.12.0esr ('Mozilla/5.0 (X11; FreeBSD amd64; rv:78.0) Gecko/20100101 Firefox/78.0'), no add-ons or plugins.

I use an online mail account. Recently when I write an email Firefox flags every word as misspelled. Firefox seems to be using a French dictionary thought I set English and Japanese as languages for Firefox to use. How can I correct this?

My problem,using Mint20.2-MATE, with FireFox92, is that FF92 shuts down whenever I minimize FF-i.e., totally down-does NOT appear in taskbar. I know I had the same problem years ago, and it was a simple fix. However, going through the "Help" sections in FF this time was no help. thank you for any suggestions.

Okay, PopOS 21.04, Firefox 92.0 x64, my packages are up to date, my graphics card (Nvidia 1080) drivers are up to date (nvidia-driver-470 (proprietary)), kernal 5.13.0-7614-generic.

I run a variety of addons, but the only ones that should even be touching YouTube in any way would be Noscript, Ublock Origin, YouTube HD, HTTPS Everywhere. In the past with my current configuration none of these have given me any issues with playback.

I don't have any idea why, this is a problem I experienced a long time ago and now newly the other day for seemingly no good reason, videos on YouTube but also the web in general will not play until I open Firefox, close the browser, open it again, and then try and do whatever it was I'm trying to do. While not a fatal issue, this is one that is extremely annoying and I really don't feel like putting up with it.

Anyone have any advice or information?

whenever i log into a official site such as Georgia DOT or Dish Network as i did recently, it is telling me that the Google (that is used as a search engine) is out of date and must be updated. as well, if i try to go to Netflix it tells me the DMR is out of date. computer set for auto update so i don't understand why. please help.. thank you.

Hello, I'm running Firefox 78 on fresh Debian Stable installation and I cannot access certain websites. I followed step-by-step the instructions by Mozilla Support found here, with no result. Of course, I tried completely uninstalling and reinstalling Firefox, renaming .mozilla folder to create a new settings folder, deleting .cache/mozilla etc. I use no proxy, and I can visit all those certain websites form other browsers of this installation. And I'm looking for a solution for more than 2 weeks now. Any help is welcome!

FF 93 arrived last night and now my setting (from userChrome.css) that removes the cyan color of the urlbar doesn't work anymore:

1. urlbar[focused="false"]:not([suppress-focus-border]) > #urlbar-background {

 border: none !important;

}

I tried a few different things but they were for older versions of FF and naturally they didn't work. I even added a line "border-color: none !important;" but that didn't work either.

So, any suggestions for version 93 of how to remove the cyan border (again) when I click on the urlbar?

@mozilla

 Only Firefox browser is logged in my Facebook account. Login and password  are not saved. If I loose session, account is gone. Please help view and save my password.

I've just set up Firefox Sync, but it is only working one way. I can see my computer's tabs from my phone but I cannot see my phone's tabs from the computer - if I use the quick access "Show tabs from other devices" it just spins a loading wheel with "Syncing".

Also, the "Send Tab" option when you right click a tab does not appear at all. Sending a tab from the phone to computer does not result in anything appearing on my computer.

Everything is set to sync on both devices, and I have tried to sync it manually. Both versions are up to date.

Hi,

I found some discussion related (https://discourse.mozilla.org/t/disable-add-ons-on-specific-website/33693) but no solution yet.

This is imho a big flaw in the privacy of users.

There are trivial cases, for example if I use a YouTube downloader plugin, I obviously want it to monitor my browsing ONLY when I'm on youtube.com...

And there are some critical cases: when I browse my web banking, or when I go on some trading website, I don't want my financial operations to be at risk because of an add-on that is very useful everywhere but on those site.

However, I don't want to exclude all the add-ons for those website too, that would be just too much.

I think there's already a coding base in place, since you can disable each add-on when using private windows. This could be enhanced by having a system of whitelist/blacklist instead. And this feature would actually make more sense than using a private window.

Another way would be to have this feature on per container, instead of per website, than would work well too.

People have different activities, and some requires useful plugins, that are very specific. I mean Keepass's add-on (for example) is useful everywhere, but many add-ons are related to one activity at a time.

For example, if I'm a marketer and want to analyze website, I'll use add-ons for having stats on metadata or keywords or even real time reports from Alexa or from AliExpress, etc...

But when I'm reading my email, I'm not happy those add-ons can see my data.

That would be tedious to disable all those plugins every time I change activity, especially since we are productive humans so obviously we need to alternate those activities doing multitask all the time.

And the private window option is not flexible enough for that kind of multitasking, when containers are.

I hope this helps everyone understand clearly why I think my request is not only a real user need, but also currently a flaw in users privacy since most people will not trade the comfort of their add-ons for some privacy concern they don't always understand...

I know this is some kind of feature request more than ask for help, but https://qsurvey.mozilla.com/s3/FirefoxInput/ is out of service so I don't know where to address my concern here.

Thanks for helping me pushing this idea forward.

Hi! so I installed Kubuntu 20.10 after using it 'directly from the cd' for some time. since, all data would be lost every time i restart, i would keep a copy of a '.mozilla' file i would find in the system. Everytime i start the OS, i would first create a folder and copy paste it, so firefox would start right where i left it off. this worked, until i decided to make Kubuntu permanent. at first things were going good, but after sometime, my OS would stop recognizing my headphones and audio port completely. at first i blamed it on my OS and went about doing somethings here and there to adjust by. but looking back, i had installed some DRM to play some video on the net. so in a desperate fix, i replaced the current .mozilla file with a backup i had. the thing worked like a charm and my audio was fixed and everything was going ok, except for the occasional fixes so that my OS would channel the audio to the right output. that is, until the problem rise again! this time, i hadn't installed anything like i did previously, so i replaced the .mozilla file again and it worked! but i can't keep doing this and i had also faced the same problem in my windows, resulting my change in OS in the first place (I think its the same issue, because whatever i did didn't fix it and windows is more sophisticated that i wouldn't know). I don't know if this much info is too much or too less or that if i should post this here or in any other forums, but i would really appreciate it if i got a solution! Thankyou!

Dear Supporter,

I got a notification from a website that FireFox is not up to date. On closer examination, this is indeed the case. Updates were supposed to be done automatically.

I changed Ubuntu's update server to main server; this had no effect.

In settings preferences under updates I see: FireFox Updates Keep FireFox up to date for the best performance, stability and security. Version 88.0 (64bit) Whats new Mozilla FireFox for Ubuntu canonical – 1.0

There is no option to check or disable for automatic updates. As far as I can remember, update to this version was automatically.

In settings help under About Firefox nothing appears about updates.

Extensions: DuckDuckGo Privacy Essentials

OS is Ubuntu 16.04 LTS notification: system-up-to-date I assume that should be allright?…

Thunderbird is 68.10.0 That seems ok...

Thank you very much

Starting as of today (Oct 13), the FACEBOOK screen suddenly moves when I am typing a comment. Whenever I hit SHIFT+alpha_letter at the beginning of a line OR simply hit the backspace key, the screen suddenly shifts about a page up, closer to top. This shifts the entry area where I'm typing down and off the screen. Just hitting the backspace to correct a typo causes the screen to scroll on its own. I have to scroll back down to the entry box and if I make another typo, it happens again. It is maddening!

I've restarted in troubleshoot mode and the same thing happens, so it is not an add-on. This is happening on both my Firefox Linux systems AND on a Windows 10 machine, so I don't think it is specifically OS related either. The screen however does stay put, like it is supposed to, using Chrome or Opera.

Is this a Firefox problem or is FACEBOOK messing with Firefox?

My current FF version is 88.0 [64 bit]. Websites are flagging FF 88.0 as outdated. There is a 88.01 version shown as available. Latest available FF version is 93.0

Firefox Releases

Updating using the Help > About function does not show any available updates. Can someone please explain what is going on? Thanks.

Hello, I am using Firefox for many years with Ubuntu but recently Firefox started to transcript Cyrillic page into Latin ones. I tried to change some of the language settings, but nothing worked. My standard language is German. How can I make Firefox show the pages in Cyrillic alphabet? Thank you for your help.

Firefox needs a limit on memory usage. I was developing a tiny web page on Linux (PopOS) and accidentally created an endless loop in Javascript that ate memory (by growing an array). My entire OS became inoperable and had to be hard-rebooted. I was surprised this could happen due to Javascript (a sandboxed browser language), running in a web page (a sandboxed app) running in a Firefox browser that is supposed to protect users from the world wild web. One errant line of legal Javascript in HTML should not equate to a denial-of-service attack.

A sensible approach would be similar to the nice warning given when a script takes too much CPU, offering the user the choice to continue or stop the script when a tab exceeds some reasonable size: a fixed MB size, or say 10% of real RAM memory.

Ideally there should also be some hard limit calculated by Firefox according to the machine's available memory and Firefox's reasonable percentage of it. For example, maybe limit Firefox (all tabs combined) to 50% or maybe 75% of real memory, so that the O/S has a reasonable chance to remain operational so that a bad tab can be closed. Otherwise, Firefox could cause the O/S to lock up, resulting in data loss if there are tabs or other apps outside of Firefox that have unsaved changes.

Thanks for your consideration!

The proton changes might make for a better smartphone experience, but it really trashes operations on computers. In case you are wondering why firefox's share of the browser market continues to slide, upgrades like "proton" are the main reason.

Hi, after fans sounding & laptop slowdown, htop was checked. Please see attachment.

cpu of 98.4 in the attachment went upto 206.4% The process was killed & the problem stopped.

Is it expected to see this problem intermittently from now?

Just trying to convert to Linux from windows (cinnamon 20.2) using the same display (3840 x 2160) Firefox on Linux scrollbars are a lot narrower than on windows and menu bar icons are too small. I cannot find any settings to enlarge these on Firefox on linux.

I estimate that the windows scroll bar is 300% wider than in Linux (Using screen ruler Linux scroll bars are 6 pixels and bitwarden icon is 12 pixels)

The usability of Firefox is questionable for me like this so I really hope there is a setting to make using Firefox a comfortable experience ( I have default font set to 20 and default zoom to 150% )