Форум поддержки Firefox

Firefox says I need a video codec to play a video (that is aparently somewhere on the page). It does NOT tell me what video, what video format, or what codec I need. How do I find out what codec I need?

Firefox version: 101.0 (64 bit) OS: Fedora 36

My bookmarks toolbar is empty. When looking through the bookmarks menu, it shows that none of my bookmarks have been removed, and they are all still listed as being present in the Bookmarks toolbar, but they are not displayed in such. To be clear, bookmarks toolbar is enabled, and I have already verified its positioning in the customize toolbar pane. There is a strip of empty space where they used to be, but they are simply missing now. How do I fix whatever issue caused the toolbar to cease displaying my bookmarks?

I am trying to download a spreadsheet file which has a .xlsx extension. Firefox insists on downloading the file (my default action) but I want to be given the option to open in my spreadsheet program (Libreoffice).

Looking in Settings and scrolling down to Files and Applications -> Applications, there are other spreadsheet formats present but not one for .xlsx. How do I add the "Always Ask" option for .xlsx files?

Libreoffice is the default system application for opening these files.

I am reinstalling Windows\Firefox, and would like to hide\remove Bookmarks Toolbar & Other Bookmarks, as shown on the images. The Delete Folder option is greyed out for both, and Other Bookmarks is empty.

Both were hidden\removed in my original installation, but I can't remember how I did that. I've seen posts mentioning e.g. browser.toolbars.bookmarks.2h2020 (it doesn't exist) in About:config, right-clicking on the Other Bookmarks and uncheck it (it doesn't exist).

I'm using Firefox 101.0.1 (64 bit).

I used a siteblocker and i tried blocking about:addons, wouldn't allow it so someone tell me how. im literally trying to prevent myself from removing extension i literally jumped from one browser to another just to make this shit possible please.

I'm trying to load a temporary add-on on my browser, but when I click the button "Load temporary add-on", nothing show up.

I tried to look for errors in the console or debugging tool, but nothing. With snap, I removed with the purge option my Firefox and install it again, but the issue still appears.

Some technical details: Ubuntu 22.04 LTS Firefox version 101.0.1 (64-bit) Mozilla Firefox Snap for Ubuntu canonical-002 - 1.0

Various website that contain dynamic content are not being rendered by Firefox to display that content. This is happening with websites that provide transportation information and ticketing, including Amtrak and Peter Pan Bus Lines . It is also happening with a genealogical website, FamilyTreeDNA, on pages that should be displaying family tree information. Illustrations of two pages are attached. I have been able to access the information by using Opera on this same computer and operating system, and by using the same version of Firefox installed on a different computer with different operating system. I am not sufficiently proficient with website development to know or understand what type of dynamic content is being generated by these websites, or how Firefox interprets the content. My suspicion is that some Firefox setting has been enabled or disabled, but I do not know which one it would be.

Hello,

I am running Firefox v101.0.1 (64-bit) on Linux (Pop!_OS, installed as a flatpak). I am using the default system theme in dark mode, though switching to the Firefox dark theme or other themes does not change anything. When I allow the Menu Bar (File, Edit, View, etc.) to be present, the browser tabs on the next line are aligned correctly, going all of the way to the left. When I uncheck the Menu Bar, however, a gap appears to the left of the tabs. I have not seen this behavior on Firefox in other environments (Debian, RHEL, Windows), and I'm wondering if there's a way I can remove that gap. I have attached screenshots showing how the tabs are aligned with and without the Menu Bar.

Thanks so much!

Hi, Just installed Ubuntu on a new laptop, with Firefox. No add ons.

Have changed my homepage to www.duckduckgo. Have changed my default search engine to duckduckgo. In about:config my browser.startup.homepage says www.duckduckgo.

Have also changed browser.startup.homepage_override.buildID to www.duckduckgo.com and browser.startup.homepage_override.mstone to www.duckduckgo.com

But STILL, every time I start Firefox, I'm taken to google.com. Please cn someone tell me how to stop google coming up when I start Firefox.

Thanks, Ivan

i had a big problem with windows 10 action center (it won't open at all) only one solution was creating new Microsoft profile and move all files from one to another (including downloads documents desktop and whole appdata folder with firefox inside included)

and theoretically all works fine. I have my firefox account, history, tabs, favorites, theme and plugins, but they have blank icons and doesn't work.

is there any way to automatically redownload and reinstall plugins?

I would like to add that I have 3 browsers (profiles) and different plugins in each.

You can't disable firefox spell checking. Check your spelling as you type. Misconfiguration? Did you make a mistake somewhere? I'm not sure. I mainly use two types of IME, Microsoft IME and google Japanese input.

I recently closed and re-opened Firefox to refresh it. Now, when I download an attachment from Gmail, a pop up appears next to my downloads icon. How do I turn that off?

There is no userChrome.css in my profile.

If it needs to be created, where do I create it?

Yes, I searched for help. What I found was about userChrome.css to solve specific problems, but not what to do if it doesn't exist. Is userChrome still supported?

Thank you! Mark.

(Firefox 102 on Windows.)

Indicating the progress of a runnig download in the taskbar is ok, but when the size of the download is unknown, there is a fast animation, that keeps going and going and going. That´s very annoying, when you want to keep focused on a difficult issue elsewhere on the screen. (Sadly I have these 'endless' and slow downloads quite often at work - e.g. github.)

How can this animation be disabled?

I would happily lose the normal download progress if only this fast animation disappears.

In about:config I did not find anything applicable when searching for 'download', 'animate', 'progress' or 'taskbar'.