Diễn đàn hỗ trợ Firefox

Help? I rebooted my machine and lost all my open tabs. any attempt to re-acquire them shows just the ones I have open now. It doesn't show any of the ones that were lost. Thanks Monica

After a recent reinstall Firefox seems to have a problem. This seems to be only Firefox specific and I can't find a working solution online after googling.

Youtube videos work, although they do give errors sometimes. A refresh always fixes those. However Twitch/Youtube live streams do not, and display a generic error message. When trying other browsers the live streams work fine.

And old Bugzilla post (https://bugzilla.mozilla.org/show_bug.cgi?id=1467495) describes what I believe to be a possible reason for the problem, however following the solutions in that thread have not yet lead to a solution.

Any further insight or solutions would be appreciated.

The blocks where code should be displayed like on screen and on stackoverflow displayed in a weird manner : replaced with [Object object] i don't have any extensions that might cause that

How do I uninstall the Firefox icon from the taskbar? The standard article on the Firefox Support website is `How to pin and unpin Firefox from the taskbar on Windows 10 and Windows 11', but it seems to be out of date. It says to right-click on the icon and click on `Unpin from taskbar', but there is no such item in the right-click menu any more.

I know that it became difficult to unpin the Firefox icon about a year ago. I got a new PC recently and installed Firefox, but I could not remove the icon. Then realised that I should have done this during installation, by using 'Custom installation' and unticking the 'Icon on taskbar' option. I searched the web for clues and found none, so I uninstalled and reinstalled, which was a nuisance.

Some months later, I have just installed the new version 110.0.1, but I forgot to use 'Custom install', with the result that the icon is back on the taskbar. Again I have searched the web, and again no success. I tried reinstalling V110.0.1 on top, using 'custom install' this time --- I could switch off the 'Icon on taskbar', but the icon is still there.

I don't want to uninstall-reinstall this time because I have now configured Firefox as I want it, so that would waste a lot of time --- and I will probably forget again sometime in the future.

I am sure that Firefox has not done this deliberately, because they are always so much on the user's side.

QUESTION: How do I unpin the Firefox icon from the taskbar without uninstalling? I have an idea that there is a registry hack that will achieve this.

Scroll wheel not working at all -but only on firefox (windows 11) I tried disabling the smooth scrolling option in logi options+ app but the issue was not resloved

The issue only resolves when starting Firefox Browser with the Troubleshooting mode, any idea what is the cause of this problem, and how can I fix it?

Today, after browsing about whether or not I should continue using Firefox as my password manager, I decided to mitigate the most important security flaw in browser based password managers, by setting up a Primary Password. I choose to use an easy to remember 8 word long passphrase as my Primary Password. I noted down the passphrase in my diary. Due to problem while loading YouTube, I decided to restart Firefox by going to about:profiles and selecting "restart normally". This issue where Firefox starts to struggle connecting to internet is a relatively common occurrence on my Firefox install, and restarting Firefox fixes the issue. When Firefox restarted, I was prompted to enter the primary password. I confidently entered my passphrase, but it was rejected. I tried to typing to it more carefully several times. I got my diary and checked it to make sure I was entering the passphrase correctly. Following troubleshooting steps on a similar thread, I restarted firefox, no luck. I than rebooted my computer, issue persisted. I decided to restart Firefox with extensions disabled, and also in troubleshooting mode. Firefox still rejects my passphrase. I have my Firefox account synchronized with two Android phones. Will reinstalling Firefox and syncing with my Firefox account solve the problem? In a similar troubleshooting thread, renaming key4.db and logins.json is suggested. However, it has not been explained very clearly. My logins.json file was modified an hour before disaster, even though I had made no changes to any of my logins or the master password. Is my logins.json corrupted causing the issue? I will like to point out a design flaw in Firefox which might have caused the issue. I usually want to see what I am typing when I am entering an encryption password. This is to make sure that I don't mistype something. However, in Firefox Primary Password configuration window, there is not option to see what you are typing. Firefox relies on low probability of typing the wrong password twice. I don't think devs should be so worried about shoulder attacks to not even allow users option to view what they typing. My case might be that low probability situation where I made the same mistake while typing the passphrase twice.

Hello. I was reading Quora.com web site on my notebook in Firefox (110.0.1 64-bit) normally, then I got power outage. When electricity returned and I tried to open it again, browser didn't open it and I gave me message:

Secure Connection Failed

An error occurred during a connection to www.quora.com. PR_END_OF_FILE_ERROR

Error code: PR_END_OF_FILE_ERROR

   The page you are trying to view cannot be shown because the authenticity of the received data could not be verified.
   Please contact the website owners to inform them of this problem.

I've tried to get support from Quora.com how message said, but they told me "this error does not originate from our website". And gave me some suggestions - "The easiest way to fix this secure connection error is to reset the Firefox settings." I've performed "Refresh Firefox", but problem persists. I don't use VPN. Can anyone please help me with this problem?

I've been using Firefox browser for over a decade to do university business (e.g., submit grades, internal proposal review processing and approval, etc.). But since December, I am having catastrophic failures. Sometimes with an error message, sometimes just getting no response at all when submitting information in a browser-based university application. And yet, I can complete those functions when I immediately go to Chrome (once I remember that that might be a problem). I really don't want to use Chrome. Is there a change in Firefox (including something which I can change some settings in my browser to counteract), or a change in our university's software making Firefox incompatible? One returned error today was "Request Header Fields Too Large. The server refused this request because the request header fields are too large." [PS, I had to type this all over when I tried to share data with you about my system -- I had to click on "troubleshoot" information, which lost all the data I had previously entered... Sigh....]

When playing any youtube video in full screen, all I get is a black screen. Issue does not appear in private mode, firefox developer build or chrome. Other sites ex. go pro media plays videos in full screen without any problems

I currently use Chrome on Android & Chromebook as my main browser, but I would like to switch to using Firefox now across all my devices (linux, android, chromebook). To do this, I need to import my passwords from Chrome to Firefox, and have them sync between the Firefoxes on all of my devices, but it's not working. I have tried the following:

Method 1: I installed Chrome on my new Linux machine. Checked and made sure it had synced my passwords by logging into a website using Chrome. Then, on Firefox, I pressed alt to enable the toolbar, then File->Import from another browser. The pop-up says "No programs that contain bookmarks, history, or password data could be found."

Method 2: Chrome seems to have a feature to export the passwords to csv. So I exported the passwords from Chrome to a csv on Linux. To be thorough (because I am having trouble getting this to work), I used accounts.firefox.com to sign out the Firefox on my android phone and chromebook, then (on the phone) I deleted my browsing data, uninstalled firefox, and rebooted the phone. Back on Linux, I did about:config, then set signon.management.page.fileImport.enabled to true, then did about:logins then menu->"import from a file", selected the csv that I just exported from Chrome, and clicked Import. Import Complete, 332 logins added, 1 not added because it was missing a password. Logins successfully imported, hooray! For testing purposes, I create a unique new password entry, http://foo.com username "a" password "b". Then I go to about:preferences, make sure that syncing is on and I'm currently syncing logins and passwords, and press "sync now". Log in to my phone, install Firefox from the play store, start it up, sign in using my email and password (it says "syncing"), go to logins and passwords, click "saved logins". The only one listed is for foo.com, the fake one I created to test the syncing, but I expected to see all 333 there.

How do I get this to work?

All of my extensions just got moved into a single new extension button. I understand this feature was just added to 109 but is quite terrible.

I can no longer see my extensions on the toolbar. I now have to do even more clicks to access certain options or settings. Which is dumb as it now takes longer to get where you need to go.

This is a terribly added feature. Not sure how this passed. The quality of life is not improved in any shape or form with this. Only makes things worse.

For example. I have norton safe web and search. I now have to click on the extension button to see if a page is safe or now have to do multiple clicks to access that extension.

This new feature is terrible and I really hope it is reverted.

Hi! I have latest version of Firefox installed on my PC. But sometimes I am programming for web. So I would like to have Firefox Developer Edition as well. But I don't want them both at the same time - one for my usual web surfing and another one for web programming using leading (or even bleeding) edge features.

How do I install and use them separately? I tried running Firefox Dev Edition installer, but it does not ask questions like where to install and which Firefox profile to use.

Summary Reset a site or domain to be no longer associated with a Container

I accidentally assigned my search-engine domain to a container. As a result every single search I perform from the URL bar asks if I'd like to open it in the assigned container instead. I'll select 'Remember my decision, open in current tab' (the current tab being the base no-container Firefox user). Unfortunately this does nothing.

I've searched through the settings and options and I've found no option to get an overview of the domain configurations or to reset a certain site. I've read suggestions online to delete the container, but this isn't an acceptable approach to the problem.

Recently I've noticed that some sections in Google search results pages show black text on dark backgrounds when running dark mode.

It doesn't happen in private windows or in troubleshooting mode, so I suspect it's some obscure custom setting that's causing the issue. It also doesn't happen in other browsers.

I've tried switching themes and changing the colour override settings but can't find the setting causing the issue. I've also tried clearing the browser cache and cookies but no dice there either.

Hoping to avoid a refresh just to fix this.

I just installed a fresh copy of Windows 11 and last Firefox, and get some weird rendering of letters on some websites. It seems that the end of a letter is bolded so to speak (screenshot attached). Also, there is an unnatural widening between the lines of text on the same websites (screenshot attached). This does not appear on other browsers. What can I do to correct it?

I've been getting funny glyphs on my google engine searches. See png. Turning off add ons and reinstalling software doesn't seem to clear the issue.

The funny text when copied and pasted is revealed to be the actual text it was supposed to be.

This is very very weird... and its only on firefox, no issue for chrome or safari. Happened just a few days ago. Don't remember installing anything. Could be malfare from a font site?

Firefox Developer Edition - Developer Console is killing my productivity. It started opening in Full screen mode about a week ago and will not exit full screen. I have to F12 and exit developer console. This is a major issue because, I work with the console not docked. Docking blocks my productivity. F11 only puts it into some very weird outline mode where all I see is a rectangular grey outline on my full screen. If I click on it, it repaints the console in full screen. There is no option to drag and expand or contract. Nothing. Nada. Please help. This is my primary browser, er -was my primary browser. I'll continue to work around it until my patience is completely exhausted. Almost there now.

Sorry about the terrible markup on the screenshot. It's hard to encircle a big gray full screen empty frame. Thank you.

These websites won't play audio or video in Firefox 110.0.1, they work in Chrome 110.0.5481.177

https://www.vrt.be/vrtnu/livestream/audio/stubru/ When I click the Play button I get an error "Oops, something went wrong, error code 200" which seems to be a general error code. In Chrome the music starts playing instantly.

https://f1tv.formula1.com/ I have a subscription but video won't play. I can press the Play button, sometimes I see a preloader but the screen stays black, no audio or video. In Chrome the content just starts playing, be it live or recorded content.

Steps I took to get audio/video working inb Firefox, but to no avail:

run above websites in private tabs download Firefox again and run it from its folder in Downloads start Firefox in Troubelshoot mode start Firefox in Troubleshoot mode and Refresh Firefox disabled / enabled Plugin Widevine Content Decryption Module provided by Google Inc disabled / enabled Play DRM-controlled content in Settings disabled / enabled Enhanced Tracking protection disablde / enabled allow media autoplay

In other discussions it was opted to remove the PulseAudio config by running the below command and rebooting rm ~/.config/pulse/*

Any help to get this working again would be greatly appreciated!

In the past the caret in text entry fields used to blink/pulsate/flash forever in both Firefox and Thunderbird. (Text entry boxes, such as the browser URL-bar, the e-mail To/Subject/Content textboxes, online forms, etc.). Now in the latest versions of Mozilla Firefox 110.0.1 and Thunderbird 102.8.0 the caret stops blinking after just a few seconds. This is very confusing and frustrating for my grandmother and she already called me several times because Firefox and Thunderbird 'stopped working'. I explained to her that this is a new feature but she does not understand and keeps forgetting it after a few days. She is used to the cared blinking continuously, it has been blinking for the past decades whenever she wanted to type something in the computer and it only stopped blinking when the computer program froze or crashed.

I am sure that my grandma is not the only person having issues with the caret not flashing, I for one also would like to have a caret that blinks forever, so when I look away from the screen and look back I do not have to search the text to find where I left my caret.

Please make it so that the default caret appearance and behavior is the same as in all other programs (i.e. blinking forever), as it used to be in the past, just like what everyone is used to. I argue that the majority of users is used to and also expects a blinking caret when they are writing an e-mail or search online and you are confusing a whole lot of people with this minor change, people who do not know how to report bugs or seek help themselves. It's a sign of poor user-friendliness if grandmas need to call their grandchildren or children for help just to write e-mails which they used to be able to do on their own for many years in the past.

I hereby suggest adding an accessibility option for people who wish to disable the blinking cursor and to change the default behavior back to 'caret flashing forever'.

FF 110.0 - Dropdown menu in responsive design mode will not display more than 20 devices, regardless of how many are selected. Does not scroll, as in earlier versions.