Diễn đàn hỗ trợ Firefox

Every time I open Firefox another blank window opens behind the main Firefox pages . I see it when I close Firefox so have to close that too. There is no URL in the window just a blank page.

When i click ctrl only ctrl its maeks tab smaller like ctrl + - but i only press ctrl also when i hold scroll i can smooth surf the tab now it dont work what i have to do?

I am able to start FF with no problem. I open a few tabs and then without warning I can't access any of the sites without closing FF and restarting. Then the whole cycle is repeated. I am considering getting rid of FF this started just over a month ago.

I'm using Firefox 124.0.2 (64 bit) on Windows, and every few days I get the error about using an older version of Firefox, with Exit or Create New Profile options. I then run "firefox -allow-downgrade" from the command prompt and everything works fine... for a few days, when it happens all over again. This only started happening a couple of weeks ago, but it's getting really annoying. How do I stop it (short of using something like Waterfox or Brave).

I have played "Hero Wars,Dominion Era " for years on Fire Fox...They did an "update" last week(Thursday or friday 04/25-26?24)and I haven't been able to log onto the game itself since...I can still open the Hero wars home page,I can get into my "discord" chat etc etc etc,but I cannot get into my individual game.(If it helps,my Hero wars game ID # is 10920140)...I had to start playing the game itself on Google Chrome...I am hopeing you can help find a solution as everything I do is from Fire Fox & I really don't like chrome :(...PLEASE Help me resolve this if possible! ( Nexus suggested I use "Incognito" on FireFox ( I remeber that from a few yrs back,but honestly,i haven't used or seen "incognito" since :()

With the latest version of Firefox the menu, etc. have a font size that is TOO SMALL. There are many Mozilla posts about this problem.

https://support.mozilla.org/bm/questions/1260063 https://support.mozilla.org/mk/questions/1395315 https://support.mozilla.org/en-US/questions/1274586 https://support.mozilla.org/bm/questions/1268779

My wife cannot read them. I can barely read them. If this is not fixed soon, we will switch to another browser.

Can the Firefox code writers fix this?

I've set up a second profile to keep my personal and work browsing separate. When I reopen my non-default profile, it doesn't restore the previous session's tabs. I have "open previous windows and tabs" checked under Settings > General > startup in both profiles. Please advise.

"I'm encountering difficulties downloading APK files using Firefox. The downloads either fail to initiate or get stuck midway. I've tried various troubleshooting steps without success. Seeking advice on resolving this issue promptly."

Netflix all of a sudden wont work on firefox after update. still works on edge and my computer in other room which has an update firefox popup that i have not done yet. i reset drm already. it wont even sign in through firefox. i was on the phone with netflix for an hour they said use chrome which i hate or edge which is equally horrible but both work just not firefox. f7111-1957-205002 this code popped once. never had this kind of problem before. i already cleared cash and redownloaded firefox and all that jazz.

When logging into an account there are multiple usernames (incorrect or older.) I would like to remove or delete them, but keep the current passwords.

Is that possible without deleting the account?

Thank you, rldelahay

So I'm having issues playing 4K videos fully on one YouTube channel: https://www.youtube.com/@ClearviewDriving

For some reason anything above 1080p gives me bad stuttering but on other channels videos don't stutter or freeze when playing 1440p or 4K quality.

Firefox is updated, I don't use Extensions other than Ad Blocker and I have that off on YouTube anyway. Seems strange that it'd only affect one specific channel.

I have a very good gaming PC too so the hardware isn't the issue.

WHY IT LOGGED OUT ALL MY ACCOUNTS FROM TABS WHEN EVER I CLOSE MY BROWSER, I HAVE TO RE-LOGIN AGAIN AND AGAIN, WHICH IS SO SO FRUSTRATING..................................

I want to enable cookies for outlook and google, the rest I dont want.

I have attempted to look at the cookie's url for outlook and add that to the exception list, but outlook still harasses me with its annoying 2fa

How do I find the actual address to put in the exceptions list to stop this issue?

I have recently refreshed Firefox on my laptop running MacOS. Previously I had changed the full-screen-transition in about:config to be zero, but since refreshing changing the setting hasn't disabled the transition. My config is this currently: full-screen-api.transition-duration.enter 0 0 full-screen-api.transition-duration.leave 0 0 full-screen-api.transition.timeout 0 Despite everything being like before the transition persists... I'm currently on the latest version of Firefox (125.0.3)

I am autofilling an ELSA payment portal. Firefox autofills the payment information correctly. But the program will not recognize the autofilled information and doesn't let me process the payment. I then overwrite all my information and then it allows me to proceed with the payment. I have used the same procedure for years but as of this last week, the autofilled information is not recognized as I click the "Continue" button after the autofilled info is complete, and it won't work. The ELSA source (State of Wisconsin) person said it's a browser problem on my end. No. The online form autofills just fine. Can anyone help? Thanks. Jeff

So on my macbook when I enable fullscreen the anmation is super weird. first it stretches the video to the top and then just expands to the whole screen, when I go out of fullscreen is stretches to the bottom and then goes out off fullscreen. for example on safari it just expands the video until it takes up the whole screen. I have gone in about:config and disabled the fullscreen animation but that did nothing.

I had to reinstall windows and it wipe Firefox.i didn't know my password so I resetted it. Problem is it wiped all my data. Didn't know changing passwords for forefox would so this. Anyway I can get them back?

I've got a really old MacBook Pro that's still running 10.13, and Firefox has started displaying a nag screen telling me that this version is no longer supported, and to install a newer version of MacOS.

Is there something in the advanced settings that will stop it nagging me? I now know it's not going to get any more updates, there's no need to keep telling me every 20 minutes...

(Note to the devs: a "don't remind me again" checkbox would be nice for things like this!)