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Within a minute of starting Firefox up, it loses internet connection and prevents the computer from connecting to anything else. Using Ethernet or Wifi doesn't work. The only thing that corrects it is restarting the computer. List of things we have tried: Troubleshooting Mode in Firefox Removing all addons Uninstalling and Reinstalling Firefox with the latest update Disabling DNS over HTTPS Clearing Firefox's DNS cache Clearing the computer's DNS cache Adding IPv6 to our standard IPv4 connection Rebooting the router Used a new Firefox profile Run a virus scan

This is on Windows 11. There are multiple other computers on the network, with W10 and W11, and none of them are having this issue. I've tried everything I can think of. After losing connection, it still pings 8.8.8.8.. Is there anything else we can try?

hello https://qrsj-map.lzhailalu.com/ black screen https://www.1024tera.com/ white screen, not loading

tested on Firefox 141.0.3, 142.0.1 and nightly 144 new profile, default settings, no addons, normal and private mode

Brave 1.77 working in both normal and private mode

the problem caused by certificate & certificate give cors error

1st website asked to trust certificate, after i did website loaded with black screen cuz cors blocked resources from loading, the certificate didnt carry over to sub domain https://n-cdn.lzhailalu.com/snow4/2/2/1.webp if i click this i get Warning: Potential Security Risk Ahead to trust same certificate this website was lacking r10 lets trust certificate, if im not mistaken it should be replaced with ISRG Root X1 & ISRG Root X2

2nd website certificate was auto verified but cors kicked in blocking resources like this one https://s3.teraboxcdn.com/fe-static/fe-v5-web-index/js/index.b81a2a8e.js clicking this give Warning: Potential Security Risk Ahead to trust digicert check my screenshots

i tested some cors addons on other profiles but couldnt bypass it

we need a fix, this is just 2 examples, theres many websites that certificate and cors ruin them, ppl test their websites on chrome thats why firefox need workaround for certificate and cors to work like chrome.

please dont tell me it simple just trust certificates cuz i figured out the problem, that not a solution, brave worked out the box, so thats mean for every website i visit i need to ckeck console for errors

and not switching firefox to brave or chrome, i only use them when firefox fail me in media or websites give me errors, i used firefox for so long and im not going to switch

if theres no proper fix, i need a way to disable certificate, cors or both permanent even if i have to edit omnija, just show me the way, please

I prefer all my login accounts to log out when I close Firefox. All of my settings are set up to do so, nothing changed, yet suddenly for the last week or so, it has simply stopped logging me out. Every day when I log in, there everything is again. I keep rechecking all my settings, even turning them back off and on, and nothing is fixing this. What's going on?

I asked this same question in Reddit and got a reply to uncheck "delete cookies and site data when Firefox is closed", close all Firefox windows, and reopen them, and this did not correct the problem. Please advise.

Sometimes when I sign in on Microsoft Outlook's email portal - a multistep process requiring authentication on one's phone - it says: "Hang on a minute while we sign you out" and then boots me, forcing me to sign in again. For awhile this was happening only occasionally, and the workaround was to delete all cookies for Microsoft online and Office. But now this is happening more frequently, and sometimes it happens immediately after deleting the cookies. In effect, Outlook on Firefox creates cookies that then prevent it from working. And it doesn't matter whether you say yes or no to "Stay signed in?" at the end of the sign-in process.

I reached out to Microsoft tech support, and they basically said this is a Firefox issue because it doesn't happen on Chrome or Edge.

Anyone else encounter this?

уже второй раз браузер закрывается и при новом открытии все закреплённые вкладки исчезают, из-за этого уже думаю поменять браузер, потому что восстановить даже из бекапа не получается

https://support.mozilla.org/en-US/questions/1248171

I saw bunch of threads which suggest to enable "ctrl+tab cycles through tabs in recently used order". It does what I need, but in previous versions I used to press only ctrl+tab. While I was holding ctrl I could iterate over tabs via tab key. After releasing ctrl selected tab was chosen

It differs with current behavior where you press ctrl+tab and after releasing all keys pop up with tabs is still be viewed and you need manual action with space/enter/mouse click to open selected tab

Is there any way to use only ctrl+tab without any manual actions required like it was back in the days where after releasing the control key selected tab is opened?

I am suddenly unable to login to my iCloud account using Mozilla Firefox. I was always able to do so before now. I am able to login using Microsoft Edge browser. I have disabled the Firefox pop-up blocker but still not working. When I input my username and password, iCloud sends me an authentication code... but that next pop-up screen from iCloud having a place to input the code does NOT pop-up, so I cannot enter the code. That pop-up screen comes up in MS Edge. Any help is appreciated!! I'm running Windows 10

I can no longer enter a password on the login page at https://secure.bankofamerica.com/login/sign-in/signOnV2Screen.go. I was able to change my password but it didn't help. A BofA agent could not identify the problem and walked me through the login using Chromium.

Ubuntu - I use the SNAP version of Firefox - I generally have lots of tabs open but only use 5 or so of them and it's generally fine.... but when I am closing Firefox, it USES like 100% of the CPU and ALL of the RAM and ALL of the SWAP memory when closing.

This locks up the computer.

Sometimes it doesn't quite go all the way but I can watch it all happen in real time, using Task Manager - and that shows a solidwall of all resources occouring, when the close Firefox is run.

I am told by research via ChatGPT that this is a very real problem with the SNAP version and it's best to change to the Debian version, copy all the bookmarks etc., across and then uninstall the SNAP version.

It's rather disconcerting to have Linux crash because of this one app locking it up and frequently.

Chat GPT:

Is there a problem with Firefox Snap Version closing and using all the resources while doing so, which results in locking up the computer?

You're definitely not imagining it—there have been reports of Firefox's Snap version consuming excessive system resources (CPU, memory) and even causing lockups or hangs, particularly during closure. Here's what’s going on and how to mitigate it:

What’s Happening with Firefox Snap?

2. Browser Hangs or Locks the System on Close

On Linux (especially Ubuntu), users have reported that closing Firefox can lead to it hanging in memory, sometimes unresponsive and still consuming resources.
Super User
Ask Ubuntu
A stark example from Reddit illustrates the severity:
“About 50% of the time I open Firefox, it'll reach 100% CPU usage in about 30 seconds… PC completely unusable unless I shutdown.”
Reddit

3. Known Wayland Sway Bug

On Wayland/Sway setups, reloading Sway while Firefox is open can trigger intense logging, causing high CPU use and an enormous syslog.
Fix: Set MOZ_DISABLE_WAYLAND_PROXY=1, or upgrade to FF 125 where the issue is addressed.
Reddit+1

Alternative Approach

Many users, particularly on Ubuntu, opt out of Snap completely in favor of the .deb package or PPA builds. These alternatives often avoid these specific issues. Ask Ubuntu Reddit

Thoughts? Solutions?

Thanks in advance.

SYS.INFO: • OS Version: Microsoft Windows 10 Professional (x64) Version 22H2 (build 19045.6218) • Processor: Intel(R) Core(TM) i7-6700T CPU @ 2.80GHz, Intel64 Family 6 Model 94 Stepping 3, CPU Count: 8 • Total Physical RAM: 16 GB • Graphics Card: Intel(R) HD Graphics 530, 1024 MB • Hard Drives: C: 476 GB (361 GB Free); D: 664 GB (483 GB Free); P: 267 GB (80 GB Free); S: 1862 GB (1687 GB Free); T: 1863 GB (1687 GB Free); • Motherboard: HP 829E, ver KBC Version 06.29, s/n PGAXV0QNNB7EO6 • System: HP, ver HPQOEM - 0, s/n 8CG8343NN9 • Antivirus: Windows Defender, Enabled and Updated

• Windows 10 Professional (x64) Version 22H2 (build 19045.6218) • Firefox 142.0.1 (64-bit) • Thunderbird 128.10.1esr (64-bit)

======================================

THE ISSUE: When opening Firefox, (Attachment #1 - below) appears. Seems to have nothing to do with any reality . . . as when I check in SETTINGS (Attachment #2 - below). 1. So, who's telling the truth? 2. How do I stop the popup (Attachment #1) from making it's nagging, inaccurate appearance?

Thank you / Nels

I can no longer sign in to sites that seem to use microsoft azure for authentication. Including: www.comed.com people's gas through https://login.wecenergygroup.com www.athletico.com which goes to https://myathleticob2cprd.b2clogin.com

All of them return a page that just says "Bad Request" after I enter my credentials and proceed.

I normally use AdBlockPlus and NoScript but I have both of those disabled.

I can login through chromium browsers.

Are others able to use those sites? Any suggestions?

Hello.

My Firefox browser is missing the close button from the top bar. Minimize and Maximize buttons are present.

This is happening on Fedora 42 With Gnome.

I believe I don´t have any custom theme or user css or extension that could cause this.

Also because, it seems to be hapenning not only in Firefox itself, but also in Firefox based browsers, like Tor Browser.

Anyone has any idea what is hapenning?

Thank you.

Moving Firefox over to a new computer, I know how to find the profiles via file manager- that is not my problem. I am not sure which to move, Local or Roaming. I am thinking Roaming as that has all my bookmarks and passwords. I have moved individual files from Roaming and do have bookmarks and passwords working on new computer.

But I was thinking it would be best to move the whole thing so I got the tabs that should be used on startup and maybe more I don't know. So I don't know if I should copy both over or just one. I did try both once and Firefox said it couldn't find profile (I renamed the old ones).

Thinking I may need to use about:profiles and select new one. Not sure what will happen, hope it lets me point to new file on my USB drive. Looks like I should use both local and roaming, but don't know? Local might be something that relates to hardware on computer.

Hope this makes sense?

Google told me to go to About.Config, find "browser.tabs.showAudioPlayingIcon" then change the value to false. But, at least in my version of FF, that doesn't work because browser.tabs.showAudioPlayingIcon isn't listed. I'm running 142.0.01.

I know FF is trying to please all the wonderful teenagers who want to constantly screw around with software settings. But it would be really nice if such new "features" were not turned on automatically.

On the page https://support.mozilla.org/en-US/kb/how-restore-browsing-session-backup , I'm flummoxed by the meaning of bullet point 10. It reads: "Copy your chosen file into the main profile folder. (Not the original sessionstore-backups folder, but the one above it.)"

What does 'above' mean here? Copy it into the folder that holds the original 'sessionstore-backup' folder? Seems an odd thing to do, given that there is no file with a similar name sitting loose within the Profile.

And I have tried that and it doesn't seem to work. Just want to check I'm reading this correctly before I persist. Thanks