Diễn đàn hỗ trợ Firefox

I'm using windows 11. Formerly, I was downloading videos from YouTube to folders on my virtual desktop, with no problem. When selected the video which I wanted to save, a window from File Explorer would open, and I could select where I wanted to store the file. I could select a folder I created, on the desktop, and the file would be saved exactly where I wanted it. Lately, the File Explorer window which opens up, has a different menu, which shows the cloud of One Drive, which wasn't there before, and the only selection for "desktop" is there. The downloads always fail, and I can't even find them on the cloud. The Microsoft techs claim that the problem is with FireFox. How do I get back to normal?

Firefox old tabs keep opening when I restart the browser. I have the box unchecked on the startup option to open them. I have the problem on my Mac Studio and my macbook. How can I fix this please.

Firefox 132.0.1 (64-bit); Fedora-40; Gnome. I just added the "authenticator" extension (https://addons.mozilla.org/en-US/firefox/addon/auth-helper/?utm_source=addons.mozilla.org&utm_medium=referral&utm_content=search). I would like its icon to appear in the toolbar, along with those for NoScript, Simple Translate, and others. I tried following the instructions on this page: "https://support.mozilla.org/en-US/kb/extensions-button". But clicking the "gear" icon in the toolbar brings up a list of all installed extensions, and there is no "gear" icon next to any of them.

How do I add the "authenticator" extension's icon to my toolbar where the other extension icons are?

Hello there! I'm a relatively new Firefox user that started using it around a month ago. The main reason is that it's currently the only browser that has smooth video streaming across other browsers I tried when I also do more demanding things on a secondary screen. However, since I started using it, I am facing a weird issue, where I am being randomly disconnected from chat on twitch.tv channels. It mostly happens on chats that are offline - but are still actively used by others - and sometimes, but rather rarely, happens on chats that are online but are slower - the error also seem to be different on those. It always looks like this: I connect to chat, use it just fine, then suddenly I get the message on the bottom saying "Connecting to chat". It usually takes a second, maybe two tops to reconnect. I have checked the page using Inspect function, and noticed an error that appears when those reconnections occur: "The connection to wss://irc-ws.chat.twitch.tv/ was interrupted while the page was loading". But the page is loaded already. I didn't refresh it or anything like that. So what gives? I have tested other browsers - Edge, Chrome, Opera - however it seems that the problem is Firefox-centric. The same chat on the aforementioned apps do not have the same problem while Firefox is happily reconnecting me here and there. I have tried clearing cache and cookies, I also tested in private mode without extensions, and in Troubleshooting mode, but to no avail. I also did a full Refresh of the browser, but the error returned after a day. I am attaching some screenshots that I did during the investigation for documentation. I was in contact with my ISP and Twitch Support, but on both ends was told that no problems were found. And so I am coming to the direct Firefox support. Any advice would be appreciated!

Hello, I am running Firefox on a W10-Pro PC. I always click the lock to check certificate validation. In the last month I keep seeing "Connection verified by a certificate issuer that is not recognized by Mozilla".

When I click for more information I see that "Norton Web/Mail Shield" does not recognize the certificate issuer. When I click on Learn More it takes me to a Firefox site "How to disable the Enterprise Roots preference" I also checked W10 certmgr.msc and I see Norton is listed. Images included below. I would love to resolve this issue. Thank you for your time.

Firefox abruptly stopped working on my MacBook Air. When logged in as the admin, Firefox works fine. When a 2nd user logs into an account on the Mac, and tries to open Firefox, Firefox asks to install a helper tool. If I do so (with the admin credentials), the helper tool prompt goes away, but then if I click to open Firefox the icon just bounces and I get an "application not responding" warning.

I have tried refreshing Firefox from the admin account. I deleted Firefox and deleted all user profiles, re-installed Firefox, and still the same thing happens (works fine on admin account, does not work for any other user on the Mac). I am also unable to open Firefox in troubleshoot mode (option key). Even with the option key the Firefox icon bounces on the dock and never opens.

I can't share any data because I can't open the app.

Any help would be appreciated.

Thanks.

Recently I started using Bit Defender. I have been getting these security messages: Suspicious connection blocked now

Feature: Online Threat Prevention

firefox.exe attempted to establish a connection relying on an expired certificate to updates.tb.ask.com. We blocked the connection to keep your data safe since websites must renew their certificates with a certification authority to stay current, and outdated security certificates represent a risk

I am having problems with log into my Sky email account as each time I log into the (Yahoo mail) I get the following message come up as show in the image below.

message	"Control character in cookie value or attribute."

I am able to access my Sky email by other browser "Google Chrome) Any advice on how to correct the issue.

Thank You.

I cannot login to Bestbuy.com on firefox, but yet it works fine on Safari.

I get the following error message.

Try it:

https://www.bestbuy.com/identity/global/signin

Ich habe in der Benachrichtigung zu der Funktion "löschen von Nachrichten mit Umschalt+Entf" den Warnhinweis "diese Nachricht nicht mehr anzeigen" versehentlich mit einem Häkchen versehen. Wie kann ich den Warnhinweis wieder anzeigen lassen?

Danke im Voraus für die Hife MB

I have just installed "Opera" browser which I thought would allow me to install an App called "Marine Traffic" onto my computer. It seemed to make changes to my default browser which is Firefox, so I re-installed Firefox. Now when I click on Firefox it comes up with a search bar but it is not the usual search bar but a largely blank screen with just a search bar in the middle. It does come up with an option at the top for another search session and when I click on that it is the normal Firefox browser screen. Can I get rid of this first strange blank screen with search bar? Mark

i host diablo_web_simple on my root running nginx when i use chrome it only loads the chunks of diabdat.mpq once -> then loads them from cache when using firefox it always loads the chunks and doesnt use cache -> this results in slower load and less performance

diabdat.mpq = ~270mb chunksize = between 1-7mb combined chunksize of loading game: ~65mb

i already set in about:config browser.cache.check_doc_frequency 2

i also set headers for caching this file in nginx

nothing works pls help

The thumbnails can be momentarily seen but within less than a second they disappear. Not happening in edge so doesn't seem to be a computer setting. Cleared all cookies and cache in firefox. No different. The attached image shows the pictures that are missing in firefox. Image taken from an Edge search.

Thank you in anticipation. Steve Balderson

Hello,

after update of window 11 to 24H2, Firefox keeps crashing on start. I completed deinstalled Firefox, rebooted and installed again, no effect. I switched off hardware acceleration and all add-ins and selected system theme, no effect. No crash occurs when started in troubleshoot mode. I did a clean-up (in troubleshoot mode), no effect. What should I do now? Where is the error log?

Regards Christian

I'm trying to measure power consumption in Firefox using automation. My goal is to get power consumption metrics for specific webpage loads.

What I've tried: 1. Using Puppeteer with Firefox's profiler:

  - Enabled power profiling preferences
  - Used the Profiler CDP commands
  - Got profile data but no power metrics

I know Firefox DevTools has power profiling capabilities in the Performance panel, but I need to access this programmatically. Is there a way to: 1. Access the same power metrics that Firefox's Performance panel shows? 2. Get power consumption data through Firefox's debugging protocol or any other API? 3. Enable and collect power profiling data in an automated way?

Any guidance on the correct approach would be greatly appreciated!

When playing videos in Facebook after a few of them I get a blue circle spinning . When I use chrome I don't have a problem.I have had Firefox for over 10 years ,if I cannot fix this Em going to have to use chrome

A few months ago after an update to Firefox the window would open but be transparent with no controls visible. I tried the refresh Firefox option which worked but left other problems. A website has a medium blue header at the top with white fonts (links) on it, which still appear that way in Chrome and Opera, but since the refresh the header is black with black fonts in Firefox (which of course you can't see). There are also variations of this problem on some other other websites. The only way I can see links on those sites is to set color management to override 'always'. Is there any way to fix this problem? Thanks Mike