Diễn đàn hỗ trợ Firefox

There's a web site I use very frequently that I suddenly cannot access any longer. I got the error message, "404 Bad Request," followed by "Request Header Or Cookie Too Large," and then "openresty/1.15.8.2." This only appears with Firefox. Microsoft Edge loads the sight just fine. What's going on here?

Hi, so my problem was exist for several times both on my PC and laptop and can't figure it out keyword to fix my issue and tbh i don't know what trigger this behavior. When browsing sometimes came situation can't type anything using my keyboard, even when outside firefox.

my current workaround to encounter this, i just need open any web with place I can type like search bar or text box and type there then back to normal (so I guessing it's maybe related to when I open web with this kind search box then move to other tab it's stuck on that box? but i can't make sure, it just happen randomly but often). and I don't know if this issues related to windows or just firefox because I didn't know the trigger so i can't recreate this on other browser.

If anyone know how to fix this, please help me.

thanks in advance

One time, when using MAC I accidentally set a website to always open in a different container. Now any time I attempt to launch this website, I receive the MAC prompt "Open this site in your assigned container?", where I have two options: Open in Current Container and Open in Assigned Container. There is also a checkbox labeled "Remember my decision for this site", however even if I tick this checkbox and select Open in Current Container, I still get this same prompt every subsequent time I visit this website.

Ich weiß nicht warum Mozillia uns unbedingt Proton aufzwingen möchte, warum kann man nicht 2 gleisig fahren. Ich finde diese Oberfläche sehr störend. Nach dem update auf Firefox 91 ist der Abstand zwischen den Lesezeichen wieder vergrößert, obwoh ich alle Einstellungmit Proton in der config deaktiviert habe.

Gibt es eine Möglichkeit, die auch für "nichtprogrammierer" umzusetzen ist, den "alten Zustand" wieder herzustellen oder zwingt uns Mozilla nach jahrerlanger zufriedenheit einen neuen Browser zu suchen?

Danke für die Hilfe

I am on arch linux with firefox version 91.0 and I recently left firefox (i think at version 89) tried out some other browsers for a while but came back to it and now it was version 91.0 and now I am noticing some lags/frame rate degrade at random times and I didn't found a relevant solution any where

I also tried h264ify as I read about the video codec youtube uses but that didn't fixed it and also tried a solution on the forum that said to disable H264 plugin and enable h264ify but that didn't worked as well

Processor: Intel i3-4130 (4) @ 3.400GHz GPU: Intel 4th Generation Core Processor Family RAM: 4gb

here is some more information about my processor and gpu fetched from lspci:

00:00.0 Host bridge: Intel Corporation 4th Gen Core Processor DRAM Controller (rev 06) Subsystem: Lenovo Device 367d Flags: bus master, fast devsel, latency 0 Capabilities: [e0] Vendor Specific Information: Len=0c Kernel driver in use: hsw_uncore

00:02.0 VGA compatible controller: Intel Corporation 4th Generation Core Processor Family Integrated Graphics Controller (rev 06) (prog-if 00 [VGA controller]) DeviceName: Onboard IGD Subsystem: Lenovo Device 367d Flags: bus master, fast devsel, latency 0, IRQ 28 Memory at f7800000 (64-bit, non-prefetchable) [size=4M] Memory at e0000000 (64-bit, prefetchable) [size=256M] I/O ports at f000 [size=64] Expansion ROM at 000c0000 [virtual] [disabled] [size=128K] Capabilities: [90] MSI: Enable+ Count=1/1 Maskable- 64bit- Capabilities: [d0] Power Management version 2 Capabilities: [a4] PCI Advanced Features Kernel driver in use: i915 Kernel modules: i915

edit: fixed formatting a bit as it was causing horizontal scroll.

Hello, how to make my vaapi work when i see youtube videos in Firefox 91.0.1? I tried change some flags, example

• media.ffmpeg.vaapi.enabled = true
• media.ffmpeg.vaapi-drm-display.enabled = true
• media.ffvpx.enabled = false

and it doenst work..

but my vaapi work with my brave browser (chromium 93 build)

Hi all After update 90.0.2 installed on my computer, FIrefox started flickering all the time a new page gets opened. I have never had such a problem before, nor I had any hardware change in the last two months. I tried several proposed solutions concerning flickering like refreshing, disabling hardware acceleration etc. but nothing helps. I wonder what happened in 90.0.2 which caused that. I just installed update 91.0 and the flickering still persists.

I am using Windows 7 Enterprise 64-bit on a Dell Vostro 3750 Laptop if that matters. Thank you

Hi i can't open twitter for some reason it keep giving me twitter.com/?failedScript=polyfills I tried to refresh Firefox and delete cache and it still didn't work I can still open twitter using different browser can anyone help me?

Is there a way to return to the more slimmed-down tabs and menus design of before? Because the latest update has all my menus double-spaced, and they're so bloated now that it's really hard to find anything with half the information spread out to take double the space.

To fix this, I have tried other users' suggestions of disabling proton, which had worked previously but no longer seems to have any effect as of the latest update. I have also tried the "compact menus" workaround, but that doesn't affect the double-spacing within the drop-down menus themselves.

Excuse me ! I'm running one policy, and I want to create another into this file "policies.json". After editing, it doesn't work.Like this:

Path: C:\Program Files\Mozilla Firefox\Distribution\policies.json

//It is the way to block "about:config" from github.com,and it works. { "policies":{ "BlockAboutConfig":true } }

//Now I create another policy. { "policies":{ "BlockAboutConfig":true "BlockAboutAddons":true } }

//Or like this,they don't work. { "policies":{ "BlockAboutConfig":true } } { "policies":{ "BlockAboutAddons":true } }

So please ! Anybody could tell me how to use the grammar about "policies.json" ? Thank you very much !

When I type a search query into the address bar and pres enter nothing happens, the little dot symbol just goes back and forth. Tried changing search engine, no change. MS Edge works OK.

I have just moved to Spain, could this be an issue, it never has in the past. Also Firefox updated to 91.0.2 just before I left UK.

Cheers Peter

I did not knowingly turn on permanent private browsing mode, but it is on and I can not find any way to turn it off. How do I turn it off? Running FF 91.0.1 on Win 10.

Got my menu bar's fonts just right, but the fonts on the bookmarks, address toolbar and tabs need to be made larger. I do not want to increase the size of any other text within FF. Thanks.

defaultPref("privacy.window.maxInnerWidth", 1000); defaultPref("privacy.window.maxInnerHeight", 1000);

Instead of 1000 what is the default value Firefox uses?

I had to reinstall Firefox after installing a new hard drive. I have an extra toolbar or extra address bar at the top of the page. I have tried everything to make it go away. I have searched and searched. Nothing works. It takes up space and is not necessary. How do I make it go away and stay away??HELP!

I just refreshed firefox because it was constantly hanging. However, my library icon is now missing. I have the bookmark star in the address bar but I no longer have the Library icon in the ribbon. When I click on the menu bar Bookmarks is shown but Library is not. When I click on Bookmarks I see a list of saved sites, but that's not a convenient way to get to them. Does anyone know how to get the Library icon back?

Thank you

Hi!

I want to dump/debug http traffic with mitm proxy: https://github.com/ganskef/LittleProxy-mitm . This proxy generates it's own root certificate which i manually imported to Firefox from about:preferences#privacy > View Certificates > Authorities > Import. I verified that cert shows up after importing it. But I get errors despite of that:

Secure Connection Failed

An error occurred during a connection to www.youtube.com. Peer’s certificate has an invalid signature.

Error code: SEC_ERROR_BAD_SIGNATURE

Is there a way to bypass it?

I have used mozilla firefox for over 5 years. It have always had a GOOGLE search bar in the center of the screen and it has worked correctly - now whenever i try to input words into the GOOGLE search bar located in the center of the screen it defaults and jumps to the URL/Web Address Bar at the near top off the screen - this jump to the address bar is VERY distracting and inconvenient! How can I revert to using ONLY the search bar in the center of the screen? I have worked on this for two solid days and none of the recommended fixes have worked. I have uninstalled and reinstalled Google and Firefox numerous times but now it always defaults any Google search to the address bar! THIS MUST STOP!!! Thanks!!! Sincerely!!!

where launch site specific browser affter v89 ? before is to access need to active "browser.ssb.enabled" on about:config and then can see in ...