Diễn đàn hỗ trợ Firefox

I wanted to use the new VPN feature and the icon initially showed up in the top right, but it has disappeared and is not present in "customise toolbar" or privacy settings either.

I have Firefox 15.3.0.1 on two computers. One one, when I go to about:config, there is a search bar with an option to "Show only modified preferences." On the other computer this search bar is missing. How can I make it display on the second computer?

Since the 133 upgrade, some sites don't show scrollbar anymore (and therefore scrollwheel also doesn't work.) Is this a setting? (very annoying...) Windows10/64bit version.

Peter

In other browsers when I add extensions, I can open an extension panel, or got the the browsers installed extensions section, and edit open up my extension setting pages, and edit them. For example uBlock Origin, but there are others. It doesn't seem possible to do such a thing with Firefox. Is that on purpose or is something wrong?

The other day I accidentally pressed a keystroke that changed a Firefox setting, and now it thinks I'm on a mobile device/displays sites in mobile view where possible by default. This has persisted despite restarts of the browser and the computer and has been happening since Sunday (Australian time). I've tried opening the Responsive Design dev tool and I've sent screenshots to a techsavvy friend (I'm totally blind and use a screen-reader, so couldn't tell this was happening until I tried to use a site that had a radically different layout in mobile view), and aside from not seeing an exit button or a switch to change device mode, he couldn't tell what was going on.

I'm stuck and need help! I would like to unmobile my Firefox!

Web-Browser Firefox 128.7esr The time in the browser and the local time are different. Difference in time zones three hours. Checked on the website https://2ip.io/ How to configure Firefox so that there is no difference?

Out of nowhere I got the sidebar today. An absolutely useless feature that I surely did not ask for. And there is no way of closing or removing it. Please provide a guide, to removing or hiding it PERMANENTLY!

How to search for installed (both enabled and disabled) addons extensions in Firefox browser like chrome does via "chrome://extensions/" in 2025?

It is quite surprising that in 2024-25, firefox still doesnt have any option to search for installed addons via "about:addons". You can only search for addon site, not for those installed on your device and profile and browser.

Is firefox team really updating their browser for 2025 when compared to chrome?

I'm looking for the best way to integrate idm integration module in Firefox to get all Internet download manager features.

IDMIntegrationModule.com guide provides 2 methods to do that which one should I use:

1. IDM CC for Firefox 2. IDM Integration Module Firefox Add-Ons

Thanks.

I updated my desktop browser today and now there is an expandable sidebar at the left margin of the window showing tool icons for Tabs from other devices, History and Customize sidebar. I can see how to remove tool icons and how to expand or collapse sidebar but can I remove the sidebar completely? Is this an option? I prefer the old look with the browser web page content extending all the way to the left of the screen, without the narrow vertical sidebar.

I have 2 laptops, one for work and one personally. I was looking to set-up firefox on my personal laptop as well but noticed I cannot open developer console on a specific element by pressing 'q' anymore after right clicking.

This is a significant feature and I would like to keep using it. Is it possible to enable this feature on my personal computer as well? Since it is still enabled on my work device.

Well looks like they did it to us again. My tabs are back on top again and need to put them below where I am a lot of other users like our tabs!

Update: Codes working fine now for 133.0

The Support forum is full with people having this problem and it seems no one at Mozilla can even b.u.t.t in with something like "we are working on it" or "here is how you can fix it yourself, also for none nerds" or anything?? Hello Mozilla, are you still alive or should we move on to a browser that does not malfunction on such an important issue as copy and paste? P.S. no answer is an answer too Mozilla, we can safely assume you are now buried on boothill, right?

Hello

I use Firefox 132.0.1 under Fedora 14 Linux. Whenever I click an urls in another application (e.g. Libreoffice, Keepass...) a new tab is opened in Firefox (according to Firefox's settings), but Firefox itself does not pop up in the foreground, it remains in the background. I highly appreciate the setting 'open links in tabs instead of new windows'. But FF only comes to foreground in case I deactivate 'open links in tabs instead of new windows'. How can I prevent FF to stay in the background in case 'open links in tabs instead of new windows' is enabled?

Thank you in advance

In the previous version of Firefox I could install a multiple language keyboard layouts in the upper right row. I had to reset everything with a new HDD and Ubuntu 24, which comes with Firefox for Linux as well. Now I can't find how to install those shortcuts that I had before. I need to use Slovenian, Italian, Spanish, German and US keyboards (UK is standard with UK English as primary choice). Thank you for your help.

Firefox went through a pretty major change recently. i could see I had to change my toolbar customisation back to how I wanted it. However, I have about half a dozen add-ons controlled via icons on the browser, but all the icons are gone and I see no way to get them back.

I don't care about cookies Cookie Editor Disable Javascript Tab Auto Refresh uBlock Origin

Until the recent Firefox update I could switch these add-ons on or off whenever I wanted via icons on the menu toolbar. I now see no way to get these controls back.

Hi everyone,

I'm on 140.0.2 / Win10

My current about:config:

browser.urlbar.trimHttps false browser.urlbar.trimURLs true browser.urlbar.untrimOnUserInteraction.featureGate false

I noticed the new https trimming, but when I double-click (e.g. to select a word in the URL) to copy or change a part, the https pops back, shifting where my cursor is relative to where it was, which is annoying for having to reposition the cursor.

Disabling `browser.urlbar.trimURLs` should make sense to revert to no-trimming, but it didn't work.

`browser.urlbar.untrimOnUserInteraction.featureGate` being false already shouldn't have caused the issue I described.

Many thanks in advance!

I am using Mozilla Firefox Developers Edition for Windows 11. Recently I have encountered a problem where my bookmarks are constantly disappearing from the panel and toolbar elements are changing places (like the arrows or the reload button).

I read the support and came across three articles about problems with this. The first two were xulstore and Places.sqlite files, which I deleted and followed the instructions in the article, reset the browser settings, but nothing happened. The third article was about the profile, I went in and saw that I had two profiles, which I deleted and created a new one, completely previously removed the browser from the device. But again, nothing happened.

I think this started when I started using the built-in Windows 11 workspace feature (multiple desktops, I opened two browsers at the same time). It was after this that my bookmarks and toolbar changed in the pre-login in the application.

I would appreciate help with this issue.