Diễn đàn hỗ trợ Firefox

This afternoon, I clicked on a link from an email and for the first time got a choose a profile pop-up. I do not want this; I have read info on Mozilla and elsewhere about its purpose but it doesn't say how to just stop the pop-up - there should be an option just stop the pop-up because I don;t want to have to choose amongst options. I have started copy-pasting the links in emails and going to Chrome and will seriously have to reconsider using Firefox of this continues. I don't want to have to type about:config or anything - this should have been an opt out or opt in thing and I want out. Thank you for your help.

When I launch Firefox, it uses well under 1GB in memory, but then it starts to increase that amount quickly in just a few minutes and gets up to 50+GB, causing error messages to pop up repeatedly until it uses all resources and locks up my computer. I have updated my MAC OS and the Firefox app, uninstalled the Firefox App and still have the same problem.

Please help

I get the message: We're Sorry Firfox had a problem and crashed. We'll try to restore your tabs and windows. To help us diagnose and fix this problem, you can send us a crash report. I sent the crash report multiple times.

I added a screenshot of my MacBook Air info.

The details are: AvailablePhysicalMemory: 1700704256 AvailableSwapMemory: 0 BackgroundTaskMode: 0 BuildID: 20260216153405 CrashTime: 1773448580 DOMFissionEnabled: 0 DOMIPCEnabled: 0 HeadlessMode: 0 InstallTime: 1772203700 LastStartupWasCrash: 1 MacAvailableMemorySysctl: 75 MacMemoryPressure: Normal MacMemoryPressureCriticalTime: Unset MacMemoryPressureNormalTime: 1773448580 MacMemoryPressureSysctl: 1 MacMemoryPressureWarningTime: Unset MozCrashReason: MOZ_CRASH(NS_ERROR_OMNIJAR_OR_DIR_MISSING) ProductID: {ec8030f7-c20a-464f-9b0e-13a3a9e97384} ProductName: Firefox PurgeablePhysicalMemory: 248750080 ReleaseChannel: release SafeMode: 0 SecondsSinceLastCrash: 15923 StartupCacheValid: 0 StartupCrash: 1 StartupTime: 1773448579 SubmittedFrom: Client Throttleable: 1 TotalPhysicalMemory: 8589934592 UptimeTS: 1.104864563 Vendor: Mozilla Version: 148.0 This report also contains technical information about the state of the application when it crashed.

Moderator note: This question has been edited to fill the Firefox version field (based on the info submitted).

I got a new desktop computer and can't access firefox. My existing account is still under my old email ([edited] @q.com) and has been decommisioned. My new email is [edited] @myctl.net. I cannot sign in because I forgot my password for q.com which no longer exists, so I can't receive an email to change password. I am at a loss how to fix this... Can you help me please. I had sent you my new email back a few months ago so I thought it had been changed to myctl.net but it is not. help please, I am so frustrated. thx for your help

Hello, i let called it very long terms Firefox user i've been using Firefox to livestream especially on this website : www.showroom-live.com

somehow about since 3 months ago i believe (or start at 2026) suddenly i can't stream on firefox again but all other browser that i tested are worked just fine

it gave blackscreen like ss that i attached. even tried on fresh installed Firefox for android too

to be honest i love feature of firefox that i can pop-out PIP windows all more than 1 and even gave full screen of that PIP

i tried every suggest that appeared on website like Disable Enhanced Tracking Protection, turning off hardware acceleration, clear cookies, autoplay are on ALLOW, doing safemode check also make that black screen, even check about:config media.mediasource.enabled (set to true),DRM ON

my system : AMD 7600x, memory 16GB,GPU : RTX3060, Windows 11

thanks before i hope i got solution

Wenn ich mich auf einigen Seiten anmelden möchte, erscheint dann dieses Fenster: ' Zum synchronisieren anmelden' 'und probieren sie andere Schutzwerkzeuge von Mozilla aus'. Ich möchte nichts davon, ich möchte mich nur ganz normal anmelden.

I need help setting my passwords in Mozilla and Firefox. I'm also confused as to what is the difference between the 2 entitities. If there is anyone to guide me would be appreciated.

My sound does not work when using Firefox. But when I switch to the troubleshooting mode in the "Help" menu, the sound works normally. I did not make any changes to sound settings. Sound was fine last night and did not work when I woke the computer up this morning. I am using Windows 11. Going from troubleshooting mode back to normal mode causes the sound to stop working again.

Sporadically over the past year, a virus warning, purportedly from Apple, has locked my FireFox screen. I must Force Quit to unlock FoxFire. See images. Is this a scam?

An old website appears in the browser when I log into the new website. The new site is "www.thestoneshop.net". What comes up in the browser is "Custom | Foothills Countertop | Northglenn". The old website.

Dear Mozilla Support Team,

I have downloaded Firefox through the official website and I have installed it through the terminal for Chromebook's Debian Linux.

I have a Chromebook c214ma with a Intel Celeron 4020 with 4 GB ram every single browser on my machine works properly just Firefox keeps closing and crashing

Kindly fix this issue

Regards,

Pranav

When I see a message to update, I always do it immediately. A few weeks ago during an update the browser disappeared and wouldn't launch. I had no option but to uninstall with Revo Uninstaller Pro.

When I installed again, I signed in and immediately selected sync and all my bookmarks were recovered but also Chrome bookmarks which I want to keep separately. No complaint, I just deleted all those Chrome bookmarks.

Had to install all my Browser extensions. I have whitelisted a few websites to save cookies from those special websites like online Banking and got an auto popup message "You are using an untrusted browser"

I had to use my phone to get a code from the Bank to continue. I use Biometrics to log into my Bank accounts and also many other websites I have installed on my phone.

Then I got another message and email from the Banks verifying I have a Trusted Browser.

Firefox is my default browser on my phone and my Laptop and always will be. Thanks for allowing me to write this message. I want to confirm this is not a complaint.