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When logging in to a website that I use many times every day all day, all of a sudden I log on and all I get is a blank white screen. I have tried clearing everything, restarting Firefox, removing Firefox and re-installing it, rebooting the computer, starting Firefox in the safe mode but no change. The same problem shows up on three different computers on two different networks with two different ISPs. The website opens normally on Edge and Chrome. I would prefer to be able to use Firefox. Using version 139.0.4 (64-bit) on all three computers. I would really appreciate any help that is available.

I have a lot of Firefox windows and tabs open, and I really don't want to lose my session.

I wanted to open a webpage in Firefox in fullscreen mode. But evidently there's some kind of serious flaw in Firefox that makes it incapable of opening webpages in fullscreen mode. Everyone says the only workaround is to open the webpage in kiosk mode. So I tried it.

But now I have two big problems:

1. One of my Firefox windows, with all its tabs, is stuck in kiosk mode. (Even if I close the window and then restore it with Ctrl+Shift+T, it's still in kiosk mode.)

2. All new Firefox windows I open with Ctrl+N are also stuck in kiosk mode.

I don't know what to do, and I'd really appreciate any help. Thanks!

To preface this, I am on MacOS.

I noticed a small delay before starting videos while I have my AirPods connected. There are a few scenarios where this delay does not exist: - Any other browser - Audio is actively playing elsewhere - Mic is in use (like a zoom meeting in the background, even when muted) - Audio is muted

I have tried safe-mode, reinstalling, and even messing with the config, to no avail. I know for sure this is isolated to Firefox, and I believe it's due to how audio devices are handled. I would rather my videos immediately play rather than wait for a "health" check from my connected device, even if there isn't audio for that time period.

I am running Firefox on Linux. Desktop environment is KDE. Compositor is Wayland. I have a 11th Gen Intel Tiger lake Core i3 with integrated Intel UHD Graphics GPU. I do not have a eGPU or any other GPU apart from the integrated Intel UHD Graphics GPU. Intel drivers are installed and are being used. Please see the details given below from about:support for more details. What I have observed that Hardware acceleration, specifically WEBRENDER_COMPOSITOR, WEBRENDER_SHADER_CACHE and WEBRENDER_DCOMP_PRESENT are disabled. The details are given below.

I have enabled the force hardware acceleration too by setting the property media.hardware-video-decoding.force-enabled to true. But still the above three hardware acceleration are still not available.

How can I get these enabled?

output from about:support GPU #1 Active Yes Description Mesa Intel(R) UHD Graphics (TGL GT2) Vendor ID 0x8086 Device ID 0x9a78 Driver Vendor mesa/iris Driver Version 25.1.3.0 RAM 0

Decision Log HW_COMPOSITING default available OPENGL_COMPOSITING default available WEBRENDER default available WEBRENDER_COMPOSITOR default disabled Disabled by default Blocklisted; failure code

                                                                                                                               FEATURE_FAILURE_DISABLED
                                                       env	        blocklisted	Blocklisted by gfxInfo	
                                                                                               Blocklisted; failure code 
                                                                                       FEATURE_FAILURE_WEBRENDER_COMPOSITOR_DISABLED

WEBRENDER_PARTIAL default available WEBRENDER_SHADER_CACHE default disabled Disabled by default Blocklisted; failure code

                                                                                                                       FEATURE_FAILURE_DISABLED

WEBRENDER_OPTIMIZED_SHADERS default available WEBRENDER_ANGLE default available

                                                       env	        unavailable	OS not supported	Blocklisted; failure code 
                                                                                               FEATURE_FAILURE_OS_NOT_SUPPORTED

WEBRENDER_DCOMP_PRESENT default available

                                                       user	disabled	        User disabled via pref	Blocklisted; failure code 
                                                                                                  FEATURE_FAILURE_DCOMP_PREF_DISABLED
                                                        env	unavailable	Requires GPU process	Blocklisted; failure code 
                                                                                                FEATURE_FAILURE_NO_GPU_PROCESS
                                                       runtime	unavailable	Requires ANGLE	Blocklisted; failure code 
                                                                                               FEATURE_FAILURE_DCOMP_NOT_ANGLE"

WEBRENDER_SCISSORED_CACHE_CLEARS default available

Hello, I just wiped windows and lost my bookmarks, passwords, and the like. I looked into the support options, as well Firefox profiles (about:profiles) but can't seem to get that data back. It's odd to me that it didn't sync because I also wiped windows last month and it recovered all of my data as soon as I signed into my Firefox account,so I was hoping that would happen again.

Any way to get this back?

Thank you.

As the question stated I have navigated to my mozilla profile folder, ( C:\Users\User\AppData\Roaming\Mozilla\Firefox\Profiles\pw1dnvcy.default-release ) but there is no file called persdict.dat. I have ensured all file name extensions are visible, & none are hidden in windows file explorer (Win 10). I am at al loss I cannot figure this out.

I need to recover a `.jsonlz4` file to restore a Firefox session with 8 active instances, as the "Restore Session" feature only opened 5 due to the `browser.sessionstore.max_windows_undo` setting being capped at 5, and the full original `.jsonlz4` file is now missing.

In the`firefox/Crash Reports` directory, there are numerous files I can’t interpret, can I retrieve my session data via telemetry or other methods using this crash information. I’m using Linux Mint with Flatpak Firefox, and I also have crash logs containing a "last crash" text file and a string of numbers, could these be useful for getting back my session?

There are times that I use the screenshot tool on X.com and the filename it saves to is WAY too long. Sometimes it tries to use the entire content of the post as the filename. I see this effect in the title bar as well. Is there a way to change it so it only uses a date/timestamp and nothing else? Attached is an example of this extremely long naming. Specs: Firefox 139.0.4 (aarch64) Mozilla Firefox for Raspberry Pi OS rasberrypios-1.0 OS: Debian 12 bookworm Kernel: aarch64 Linux 6.12.25+rpt-rpi-2712

I keep getting notifications, supposedly from Mozilla and/or Microsoft on lower right of my screen, telling me the system is infected. How do i determine if these messages are valid, or a scam ? Turned computer off and back on--messages keep popping up.

im using firefox on ubuntu, version 139.0.4. when i browse the internet using firefox, every some time the toolbar and the search bar "freeze" - i am unable to click anything, from the url, to any of the buttons. it takes up to like 1/2 minutes for the search bar and the toolbar to work again. i never had this issue before, neither on ubuntu (and other linux distributions), nor on windows...

can you give us the option to change the hotkeys/shortcuts please? is it possible for this to be an option for the future, I and I believe a lot of others switching from chrome to firefox would like the accessibility to change it as to what they're used to. Thank you very much for your time.

-Leo

I cannot display Amazon Deals properly that contain multiple he products. The home page and single products display normally. should be. A page with multiple products has large blank areas where the product should be. If I move the mouse over these spots, a soundless video will often display.

My clearing of the temporary cache files did not help. Stopping Ghostery doesn't help either. Other add-ons include Last Pass, Honey, Review Meta and Facebook Fences.

Help is appreciated.

When using the new version of Firefox, I found that bookmarks only appeared in new tabs. Once I opened other web pages, there were no bookmarks above the screen, which made me feel inconvenient. Previously, the new tabs could also be customized, but now they can only be blank or the default pages of Firefox. So, can the new version of Firefox solve these problems? Or which of the older versions of Firefox can still meet my requirements?

There is a black box on the top left corner whenever firefox is maximized. This problem appeared when I got my new computer screen (Asus 27" TUF Gaming VG27AQ1A, 170Hz WQHD). My old computer screen (23.6" VE247H LED, Full HD, 2ms, 10M:1) didn't have this issue.

Any help how to fix this issue?

Recently my HBO max started to not load on firefox... I've tried the usual suspects, cleared cache and cookies multiple times, but when trying to pick a profile, just a black screen loads. Nothing happens.

Picture below, every logged link of the site is like this, i can only access links before login, like answers/support/ads,campaigns etc. Those kind of pages load.

Also, sometimes, when accessing the site through search engines, the site loads, but on a different profile than the one I use, but when trying to switch profiles, the same thing happens again, nothing loads.

An 81 year old not as savvy as I was, very long time user of Firefox on mac and android phones. Just purchased new Samsung Galaxy A16 SM-A165F/DS. Two problems, 1. even setting Firefox as default browser in mac and phone it goes straight to Google and 2. Snapchat suddenly appeared on the phone every time I accessed Firefox and because I do not have an account without signing up I cannot get rid of Snapchat. Help please...