Firefox Community Forum

The same thing happens on my two Dell laptops (Inspiron and Latitude), and a Hyper-V VM (on my desktop PC). They all run Bazzite Linux 6.17.7-ba25.fc43.x86_64.

A video may play for a second or two, and then it's either a black screen, or an error message of "The content doesn't seem to be working."

On the same two laptops and VM, the Chromium Browser, and LibreWolf (a fork of Firefox?), have no issues playing the same videos.

Firefox version on all three systems is 147.0.3.

Any help/guidance welcome with thanks.

I recently refreshed my FF installation. Before I did that I had configured my tab settings to always display the x icon (close tab) in all active tabs. After the refresh, the x icon is gone for all tabs.

I cannot remember what I did to get them to display originally. I've tried to do this in the userchrome.css file. But it didn't work. Let me know if you have a solution.

I am not able to copy and paste in Firefox while using Microsoft Office for the web. I can in the same documents using Chrome & Edge I have searched the web and tried every setting I could find but can still not use copy and paste

I am using Firefox 149.02 (64-bit).

I access the website The Daily Beast (https://www.thedailybeast.com) and like to make Comments on some of their articles. Up until about 2 months ago everything was running smoothly. But now I am unable to use the Comment section. I get the following response from The Daily Beast...

"Oops, something went wrong :( We detected some connectivity issues therefore we’re unable to load the Conversation."

I do not have this problem when using either the Norton Private Browser or the DuckDuckGo Browser.

What's wrong?

bold textI have used Firefox for several years and it is the only browser I have on my Win 11 PC I just purchases and installed Malwarebytes Premium now I get the attached screen on banking and other daily used sites that never open When I un-install Malwarebytes software everything returns to normal Do you have any updates that correct this issue Malwarebytes recommends not using Firefox

I am using Firefox 149.0 (64-bit) with Yahoo.Com as my home page. All of a sudden, when I use the search bar at the top of the Yahoo Home Page, Firefox opens up a blank tab in response. Doesn't matter what I search for, same thing happens. Then, if I close that blank/empty tab and reattempt the same exact search again, it works fine.

This has been happening only for the past few days - was fine before. Is this Firefox? Or is this Yahoo? And how can I resolve the issue?

Thanks in advance.

I've got an Angular project running locally on my machine (https://localhost:4300 using NodeJS 24.11.1 and Angular 20.3.0) and I can't get it to consistently load files for me when I refresh the page.

The network call shows the response coming back, but I'm getting a red ban icon in the Status column instead of 200. Sometimes it's styles.css and nothing looks right. Sometimes it's polyfills.js and I get an error in the console about "In this configuration Angular requires Zone.js". Sometimes, it's one or many chunk-*.js files. Sometimes, it goes back and forth about which it doesn't want to load. And then sometimes, everything is fine. When it fails, it takes between 1 and 20-some-odd refreshes of the page to get it to load properly. The passage of time doesn't seem to make a difference, as sometimes I can recompile the project and jump right into Firefox and it loads fine. Other times, it will only load after I've refreshed multiple times. If it's a JS file that fails, I also see a warning in the console window about "Loading failed for the script with source [filename]".

I've added an exception for the SSL certificate. CTRL+F5 doesn't make a difference in the behavior. The only extensions I have running are LastPass and Bitwarden. The only plugins I have in place are "OpenH264 Video Codec provided by Cisco Systems, Inc." and "Widevine Content Decryption Module provided by Google Inc." I've disabled Enhanced Tracking Protection for the site. I've rebooted and restarted everything.

Any ideas what might cause this? The other developers on the team don't have this issue. I'm using "ng serve --host 0.0.0.0 --ssl xxx-app-name-xxx --live-reload false" to run my environment. What should I be looking for on my machine that might cause this type of intermittent failure?

As of today, every single time I try to download something, Firefox instantly cancels it and I'm not sure what the issue is. I've disabled adblock and Malwarebytes and refresh Firefox—same issue. Hitting retry from the download panel works but I can't figure out why the first download attempt is always cancelling, even if it's the same file. I'm not even downloading big files.

YouTube is playing 4K videos like they are in slow motion. If I lower the quality they work fine, but switch back to 4K and it's slow motion stutter-fest again. I have seen several topics about this but it's still happening to me despite all of the "fixes" I've tried. This is a list of everything that I've seen and tried, and not a single one or any combination of them fixes the problem for me.

In about:config I tried changed the following to False: gfx.webrender.layer-compositor media.av1.enabled media.wmf.dxva.d3d11.enabled

Tried uninstalling all extensions.

Tried a complete uninstall and reinstall of 149.0.2 with a fresh profile instead of updating from 148.0.2.

Tried installing uBlock Origin and used the following rule: ||www.youtube.com/web-reports$xhr

Tried unchecking the uBlock "Quick Fixes" filter.

Tried disabling hardware acceleration.

Tried disabling DNS Over HTTPS.

All that said... what DID fix it was reverting back to Firefox 148.0.2. I tried again to update from that to 149.0.2 using the FF built in updater but the same issue immediately came back. Zero issues at all playing 4K YouTube videos on FF 148.0.2 or the latest versions of Chrome and Edge. Issue is ONLY on FF 149 and 149.0.2.

Suddenly—with no changes made in Firefox, no power failures, no anomalous occurrences, and with the latest version of Facebook—Facebook would not display reels when clicked on.

What came up was at first a briefly (maybe a second) displayed image, but rather than remaining, the image disappeared, leaving an all-black screen except for the usual icons normally there: in the upper left, the "X" for closing the window and the Facebook logo; in the upper right, the Facebook menu, messenger, notifications, and account icons; at the middle right, the up and down circled arrows (which function but which lead to more displays of only black as well); and lower-right center, with the vertical display of the thumbs-up emoji, comment, share, the three-dots more options icons.

Firefox 149.0.2 is installed on a Windows 11 computer less than a year old (which has displayed no anomalous or unusual behavior at all).

Clearing the Firefox cache and restarting Firefox have done no good. What is wrong here?

Thank you.

Hi,

Firefox won't allow me to open www.Haaretz.com It responds with the message below. I have emptied the cache, restarted firefox, nothing worked. Please explain why this is happening and how I can fix it.

Thank you!

Error 403 Forbidden

Forbidden Error 54113

Details: cache-ewr-kewr1740098-EWR 1775692014 80179143

Varnish cache server

Hi there,

I woke up this morning and opened firefox. Normally it opens the days previous tabs and this morning it didn't. When I tried 'restore recent tabs' it didn't do it. When I went into history and found the previous day's back up and tried to restore it also failed. Can you help?

Best wishes, Inez

How can i change bookmarks menu so it will close after choosing. Ive searched and only found option to stay open, (Option to not close menu when opening new tab)... Not what im wanting, I want to open bookmarks choose and have it auto close the side bar of bookmarks. Maybe even auto closing the link folders opened. Windows 11.

Hi,

My Firefox had auto updated to the newer version with AI built-in and auto-enabled, which meant the browser would crash EVERY. SINGLE. TIME. I would launch it.

For perspective, I am running an old Lenovo Thinkcentre mini PC with an Intel i5 6th gen and 16gb of ram; its got Windows 11 installed, and always running out of memory with the simple things like browsing and word processing. This is NOT a PC or use-case that needs or warrants AI.

So, I uninstalled Firefox (149) and installed the latest version WITHOUT AI built-in (147).

I then synced my profile, and things ran fine. An hour passed, and then i kept getting an error, saying my profile was created with whatever and I need to create a new profile.

So, I created a new profile and synced, again, and I got the error, AGAIN...

I'm about to boycott Firefox on all the devices I control, and opt for an older version of Opera or something more obscure, so that I don't have to deal with this nonsense.

Ive tried other browsers like Chrome and Microsoft Edge and have no problem.

I do get a Message that states my Facebook account has been temporarily suspended and I have to shut my PC down to get out of this message which locks my screen!

Can you help or suggest anything.

Windows Defender shows NO issues.