Firefox Community Forum

A recent set of system updates appears to have made most website videos not play in Firefox.

When I inspect the Developer Tools - > Console tab the most detail Firefox gives are an error line similar to: Media resource URL could not be decoded, error: Error Code: NS_ERROR_DOM_MEDIA_METADATA_ERR (0x806e0006)

Internet searches for the error name and error hex do not appear yield any applicable troubleshooting, nor any methods of collecting additional problem data.

How can I obtain more detail on where the error is happening and how Firefox might be interacting with other packages present on my system?

Arch Linux has some older ffmpeg-compat packages, but those don't appear to match any of the web results, in that they're even older versions of ffmpeg.

yay -Ss ffmpeg-compat aur/ffmpeg-compat-55 2.3.6-4 (+24 0.00)

   Compatibility package for ffmpeg to provide versions 55 of libavcodec, libavdevice and libavformat, not anymore provided by the ffmpeg package

aur/ffmpeg-compat-54 1.2.12-4 (+87 0.00)

   Compatibility package for ffmpeg to provide versions 54 of libavcodec, libavdevice and libavformat, not anymore provided by the ffmpeg package

Ridiculous with the new update page saying " A browser that's truly yours My Firefox: More Speed, More Security, More Fun." WHEN YOU CANNOT TURN OFF THE IDIOTIC popup spam for the updates NOT EVEN GOOGLE CHROME DOES THAT. And ridiculous it has to LOAD THE UPDATE after restarting the browser lag time and IDIOTIC BRIGHT SCREEN FLASHING even if you have darkmode on, JESUS CHRIST this browser seems ridiculous and FAR WORSE THAN THE OTHERS WHEN EVEN CHROME IS BETTER with these settings and not being pointlessly ridiculous rofl. WHAT is going on with that people. AND SETTINGS TO FIX THAT would make this less ridiculous to use obviously, THANK

EVERY [removed] DAY firefox looses my tabs, historys, extensions/addons, prefferences and settings.... EVERY [removed] DAY!!! why am i wasting hours each day trying to recover basic [removed] ur piece of shit web browser clearly cant retain. even [removed] BING would be better at this point. ive tried everything at this point even down to tab managers but again without the webrowser holding extension info this too is [removed] useless. whats more annoying is it has clearly been an issue for over 8 years with a 10sec google search.... SORT YOUR [removed] OUT!!!!!!! yes im on windows, yes im up to date, yes ive tried resetting ur web browser, yes i have a [removed] folder with "old firefox data" on my descktop i cant use, yes ur web browser is a piece of [removed], yes i will be uninstalling this [removed] shortly. sadly i still remember the day firefox was king...... o how the mighty have fallen..

I reset Windows yesterday to attempt to fix a problem with my computer. After redownloading Firefox and signing into a few basic things (including my Mozilla account), I realised all my logins were gone. I have followed the steps in [[this tutorial|https://support.mozilla.org/en-US/questions/1310179]] but it didn't work - I think saving logins in this instance of Firefox overwrote the other logins file, as when I opened it, it only had the login info from what I logged into after I reset.

Looking at my connected services, it seems the instance of Firefox from before I reset is still open. I mention this just because it's possible that this would contribute to a solution.

Any help is greatly appreciated as I have a number of securely generated passwords and cannot access a good deal of my accounts.

Hello,

I recently deleted pwnedpasswords.com from my cookies, as well as blocked this website; however, it keeps reappearing in my list of cookies.

I've never even visited this site (that I'm aware of), and it's a bit concerning to me.

In spite of clearing ALL my cookies (and blocking this website), it keeps appearing in my list!

Please advise :)

I have been using Firefox for many years and never had issues. Two days ago, I turned on my HP with Windows 10 and I got a pop up message something about Error Platform 126.0 XUL Runner is not compatible. I could not access Firefox, Google, or the internet. I uninstalled Firefox and reinstalled, but after that, everything runs very slow. Each time I go into a website, it can take up to over a minute to pull up! I cannot even delete email from my Gmail! It's piling up. Downloading can take over an hour! I checked all the trouble shooting forums in Mozilla and tried just about everything. I went back into "About:profile"s and created a new profile. It it did not make any difference. I also did a Firefox refresh. Did not help any. I went back into the profile I had before the XUL error because my bookmarks were there. Still slow. I cleaned out the cache, in both Firefox and my Windows 10. made no difference. I only have three extensions in Firefox. I don't know what else I can do to fix this. Also, my drivers and other software are automatically updated by Windows. My HP is only 2 years old as well. Everything was fine in Firefox until that XUL error message popped up and I had to uninstall and reinstall Firefox. That is when everything became agonizingly slow!

Update: My computer is barely usable anymore because of the Firefox issue. Having to wait for a minute or more for everything I do on the internet? I know it cannot be my computer itself because it is not even two years old yet. I may have to dump Firefox if I cannot get this fixed. I have Norton 360 and it is not malware or a virus. Firefox messed something up.

Hi there,

On the 23. of Mai I first noticed that I am unable to download any files whatsoever. I tried downloading .exe files and also a .csv file. When I try to download one of these files it appears in the downloads window but immediately goes to the status "Failed". Any retry fails as well.

The same thing goes for extensions. I cannot download any extensions or plugins using my Firefox browser. Since I reinstalled Firefox I can now also not use Plex because Firefox can't install the required plugins.

I will attach screenshots of all the errors I get.

All of the above worked when I tried it on the Edge browser.

Firefox version: 126.0 Windows 11

Things I have tried to fix the issue:

• Use the network connection from my phone instead of my home network
• Disable firewall and windows defender
• Reinstall Firefox
• Refresh Firefox
• Downgrade to version 125.0.1 and 122.0
• Reset router to factory settings
• Flush dns
• Restart PC
• Manually delete profile folder
• Delete temp files
• Change download destination
• Disable "Block dangerous and deceptive content"
• Troubleshoot Mode

Is Firefox using some other temporary folder for downloads?

Any ideas on how to fix this issue would be appreciated.

Thank you.

When I open Firefox these days, the window is so big that the toolbar is barely visible. I have to put the cursor in just the right little spot to pull the window down and resize it. It is NOT full screen or maximized, it just opens a huge window that's too far up on the screen. I just want to resize the default window that it opens with.

Since 2 weeks, I have been facing a UI error in the address bar. Whenever I select it to type something, the bar and search suggestions jump up off-screen. Pic attached.

I upgraded from 126.0.1 to 127 today. Upon update, all my windows are gone. The only way I could access them is to revert to an older profile backup and reinstall 126.0.1.

I tried exporting my session with Tab Session Manager in 126.0.1 and reopen them in 127, but that only restores the last tab of each window (oddly). The json clearly lists 3 windows each with multiple tabs. I tried copying the sessionstore-backups folder, but no dice.

Symptoms similar to : https://support.mozilla.org/en-US/questions/1446921

Just checking, can I still make a $3 monthly Paypal donation to Mozilla, or is that amount too small, or does it expire, or something to that effect? Thanks much!

Hey there, long story short - nowadays it's crucial to support those who WFH, and most people use G Suit for company work. I personally have a few daily calls via Google Meet and having the TAB sharing feature available is highly appreciated. I know this was requested a lot, but this is a real dealbreaker for many people.

What are your thoughts on this? Maybe it's somewhere in the roadmap already? Thanks!

When visiting the "support.mozilla.org site, third-party translantion add-ons(such as "Immersive Translate") can't work. It says "can not read or change data on this site". I want to translate it on the same page rather than skipping into a new page. However, it can work on the "www.mozilla.org" site. When visiting on Chrome, there is not a problem. Is that site just privileged on Firefox ?

Hello, I made animations CSS on my web site and everything was working great on all browsers. I just see that it doesn't work anymore only in firefox...

here is my code:

/* -------------------------------------- */ /* ANIMATION ANE */ @keyframes mouvement-uniforme {

   0% 		{ animation-timing-function: linear; transform: translateX(-500px); }
   100% 	{ animation-timing-function: linear; transform: translateX(30px); }

}

@-webkit-keyframes webkit-mouvement-uniforme { 0% { -webkit-animation-timing-function: linear; -webkit-transform: translateX(30px ) translateY(-2px ) rotate(-2deg); } 2% { -webkit-animation-timing-function: linear; -webkit-transform: translateX(60px ) translateY(2px ) rotate(2deg); } 4% { -webkit-animation-timing-function: linear; -webkit-transform: translateX(90px ) translateY(-2px ) rotate(-2deg); } 6% { -webkit-animation-timing-function: linear; -webkit-transform: translateX(120px ) translateY(2px ) rotate(2deg); } 8% { -webkit-animation-timing-function: linear; -webkit-transform: translateX(150px ) translateY(-2px ) rotate(-2deg); } 10% { -webkit-animation-timing-function: linear; -webkit-transform: translateX(180px ) translateY(2px ) rotate(2deg); } 12% { -webkit-animation-timing-function: linear; -webkit-transform: translateX(210px ) translateY(0px ) rotate(-1deg); } 14% { -webkit-animation-timing-function: linear; -webkit-transform: translateX(240px ) translateY(1px ) rotate(1deg); } 18% { -webkit-animation-timing-function: linear; -webkit-transform: rotate(0deg) translateX(240px) translateY(2px ); } 24% { -webkit-animation-timing-function: linear; -webkit-transform: rotate(1deg) translateX(240px) translateY(-2px ); } 28% { -webkit-animation-timing-function: linear; -webkit-transform: rotate(0deg) translateX(240px) translateY(3px ); } 32% { -webkit-animation-timing-function: linear; -webkit-transform: rotate(0deg) translateX(240px) translateY(-1px ); } 34% { -webkit-animation-timing-function: linear; -webkit-transform: rotate(1deg) translateX(245px); } 36% { -webkit-animation-timing-function: linear; -webkit-transform: rotate(0deg) translateX(-2px); } 38% { -webkit-animation-timing-function: linear; -webkit-transform: translateX(-2px) translateY(2px ); } 40% { -webkit-animation-timing-function: linear; -webkit-transform: translateX(-245px); } 42% { -webkit-animation-timing-function: linear; -webkit-transform: translateX(-245px) rotate(1deg) translateY(-2px ); } 43% { -webkit-animation-timing-function: linear; -webkit-transform: translateX(-245px) rotate(-3deg); } 100% { -webkit-animation-timing-function: linear; -webkit-transform: translateX(0px); } }

@-moz-keyframes moz-mouvement-uniforme { 0% { -moz-transform: translateX(30px ) translateY(-2px ) rotate(-2deg); } 2% { -moz-transform: translateX(60px ) translateY(2px ) rotate(2deg); } 4% { -moz-transform: translateX(90px ) translateY(-2px ) rotate(-2deg); } 6% { -moz-transform: translateX(120px ) translateY(2px ) rotate(2deg); } 8% { -moz-transform: translateX(150px ) translateY(-2px ) rotate(-2deg); } 10% { -moz-transform: translateX(180px ) translateY(2px ) rotate(2deg); } 12% { -moz-transform: translateX(210px ) translateY(0px ) rotate(-1deg); } 14% { -moz-transform: translateX(240px ) translateY(1px ) rotate(1deg); } 18% { -moz-transform: rotate(0deg) translateX(240px) translateY(2px ); } 24% { -moz-transform: rotate(1deg) translateX(240px) translateY(-2px ); } 28% { -moz-transform: rotate(0deg) translateX(240px) translateY(3px ); } 32% { -moz-transform: rotate(0deg) translateX(240px) translateY(-1px ); } 34% { -moz-transform: rotate(1deg) translateX(245px); } 36% { -moz-transform: rotate(0deg) translateX(-2px); } 38% { -moz-transform: translateX(-2px) translateY(2px ); } 40% { -moz-transform: translateX(-245px); } 42% { -moz-transform: translateX(-245px) rotate(1deg) translateY(-2px ); } 43% { -moz-transform: translateX(-245px) rotate(-3deg); } 100% { -moz-transform: translateX(0px); } }

@-ms-keyframes ms-mouvement-uniforme {

   0% 		{ -ms-animation-timing-function: linear; -ms-transform: translateX(-500px); }
   100% 	{ -ms-animation-timing-function: linear; -ms-transform: translateX(0px); }

} @-o-keyframes o-mouvement-uniforme {

   0% 		{ -o-animation-timing-function: linear; -o-transform: translateX(-500px); }
   100% 	{ -o-animation-timing-function: linear; -o-transform: translateX(0px); }

}

.position { position: relative; top: -200px; left: -280px; float:left; }

.bouge { animation: mouvement-uniforme 60s ; -webkit-animation: webkit-mouvement-uniforme 20s ; -webkit-animation-iteration-count: infinite; -webkit-animation-fill-mode: forwards; -webkit-animation-duration: 15s; -webkit-animation-delay: 0s; -webkit-overflow-scrolling: auto!important;

-moz-animation: moz-mouvement-uniforme 20s; -moz-animation-iteration-count: infinite; -moz-animation-fill-mode: forwards; -moz-animation-duration: 15s; -moz-animation-delay: 0s;

-ms-animation: ms-mouvement-uniforme 10s ;

-o-animation: o-mouvement-uniforme 10s ; }

It was working fine before on firefox. it works on other browsers (opera, Edge,..) Do something changed? it's a long time that i didn't chek it so...

this is the page where a donkey should appear at the bottom of the page:

https://www.campingnoroc.com/en/our-campsite/

Thanks a lot for your help!!

Why is Firefox backing up my bookmarks in a json file, when Firefox itself doesn't recognise the file type when trying to restore said bookmarks? I WAS able to restore my bookmarks by converting the json file at https://www.jeffersonscher.com/ffu/bookbackreader.html. But why can't Firefox just back up as an html file like to used to? I had to go off searching the internet for a solution, turning what should've been a 5 minute job into nearly an hour 😕

here is the video: https://streamable.com/zffknq the issue is about transparent bar with vertical addons and slowly fullscreen animation, and the fullscreen animation isn't config-able, I already set full-screen-api.transition-duration.enter 0 0 full-screen-api.transition-duration.leave 0 0 in about:config, and disable sidebar or userChrome is not work too. and this is happend about one mouth ago after my nixos update firefox.

Tab detachment was working fine until updating to Firefox 126. Now the tabs cannot be moved, detached or dragged to another window.

In about:config, browser.tabs.allowTabDetach is set to true

Suggestions?

Recently I used the forgot about this site for reddit, but when I try to click on a link from either my bookmarks or from a web search I keep on getting. [The page isn’t redirecting properly Firefox has detected that the server is redirecting the request for this address in a way that will never complete. This problem can sometimes be caused by disabling or refusing to accept cookies.]

Not exactly sure what causes this or how to fix it.