Diễn đàn hỗ trợ Firefox

I find that my desktop browser firefox is very slow or doesn't work at all on a lot of websites like amazon or fortnine.

My internet connection and computer are not the issue: 270Mbps (wired connection) Processor AMD Ryzen 7 9800X3D 8-Core Processor (4.70 GHz) Installed RAM 32.0 GB (31.1 GB usable) Graphics card NVIDIA GeForce RTX 4070 Ti SUPER (16 GB) Storage 3.58 TB of 10.92 TB used System type 64-bit operating system, x64-based processor (Windows 11)

My old PC and my mobile phone runs these website fine.

Sometimes the website will work for a moment, but stop and just load for ever after I open a new tab or clink a link. My task manager doesn't show any ethernet usage despite the tabs indicating they are trying to load. Refreshing the tabs does nothing and no matter how long I leave them they don't load. All my drivers, OS and programs are up to date. I have disabled my enhanced tracking protection and I don't have any adblockers. I have tried using the CMD "ipconfig -renew" and using ccleaner to clear out my cookies and cache but, nothing seems to have any lasting effect.

I am losing my mind trying to fix this. Why can I not browse the internet on my PC?

Any help on this would be amazing and much appreciated.

Sincerely, Calvin

Hi!

We have a intranet site that works in Edge and Chrome without issues with the site added to "internet options". But for some reason we are getting 401 Unauthorized when trying to access it from Firefox. I have tried adding the urls to: network.automatic-ntlm-auth.trusted-uris network.automatic-ntlm-auth.allow-proxies: true network.automatic-ntlm-auth.allow-non-fqdn: true network.auth.force-generic-ntlm: false network.auth.force-generic-ntlm-v1: false

Ingocnito mode , same error. I have tried disabling all plugins. Disabled DNS over HTTPS.

HTTP/1.1 401 Unauthorized Server: Microsoft-IIS/10.0 WWW-Authenticate: Negotiate X-Powered-By: ASP.NET Date: Mon, 25 May 2026 08:15:41 GMT Content-Length: 0

Regards Rasmus

I started noticing that Firefox was giving me a lot of "not responding" freezes the past couple of weeks. The past couple of days I basically cannot access Firefox at all - constant, immediate freezing. I have tried uninstalling/reinstalling (multiple times), disabling hardware acceleration, running troubleshooter mode (still freezes! if it opens at all!), deleting profiles, restarting my computer, etc. I've done just about everything I can find online about this issue. Nothing has worked. I have no issues with Chrome or Edge.

Any suggestions??

Gentlemen, isn't your browser using a lot of RAM? I've been freaking out about it in recent years. That's only with 25 tabs open!! Despite the fact that the system was installed just a day ago, without any tweaks!!!

recent firefox update can no longer copy and paste when creating a blog post in Squarespace, I have been using squarespace for around 15 years for my websites and I have never seen this issue, Firefox 15.1 installed and all of a sudden when trying to create a blog post in Squarespace, when I right click a text box pop up and it no longer says paste so I can no longer copy and paste text - this is more than a little annoying, you will not be surprised to know that I am now using Chrome to create my posts, there is no issue in chrome. I am a firefox geek! how can i solve this problem, I just did another update from Firefox, the issue remains I have been using computers for 40 year so I am not a novice but software glitches, I am lost

When I try to make a Google search I get the following message, "I'm not a robot" with a reCAPTCHA: "Our systems have detected unusual traffic from your computer network. I know this has been an ongoing issue, but it only happens with firefox on both my computers, vpn and all extensions off. Even tried a new IP address, same issue.

I'm blaming the latest Firefox update from a couple of days ago, since this problem only arose yesterday. Now cut off from reading and following news that I really want to receive.

This is what I get when trying to access links within a few of the websites that I regularly access for links to articles it posts:

The site ahead may contain harmful programs

Firefox blocked this page because it might try to trick you into installing programs that harm your browsing experience (for example, by changing your homepage or showing extra ads on sites you visit).

Advisory provided by Google Safe Browsing.

I have looked at some of the comments about Firefox automatically opening pdf docs. Myu concern is twofold. Most importantly the password in the doc is somehow being overriden; that is a severe security issuen for me. Destroys the whole concept of security. Makes me very uncomfortable and may discontnue using Forefox after more than 15 years. Secondly this caught me by surprise; it only occurred for the first time this morning. How can i overcome this to prevent Firefox from performing merely as a browser?

I have completely cleared relevant history. I am in the UK, so only use Amazon UK. Yet, even within a day of removing all trace of amazon.com, it shows up again in the list of top sites on a blank tab's address bar suggestions. (.com is not in bookmarks, shortcuts, or recent searches, which are the only other selections)

The only explanation I have for this is that amazon.co.uk is making back-end calls to amazon.com and polluting whatever mechanism is used for this list – even though the browsing history as I can see and manage it does not include any references to amazon.com whatsoever.

Please, either:

• tell me how to get the browsing history as shown in the new tab's suggestions to respect the browsing history as recorded and manageable, or
• tell me how I can have control to blacklist certain sites that contaminate the list despite there being no record of them within my browsing history

The only other detail that may play into this; the first time this appeared out of nowhere I suspect was also the point at which the Suggestions from sponsors magically appeared in settings, and was on by default. Ever since then, getting rid of amazon.com has been a Sisyphean struggle, as though unchecking the sponsors option were being ignored.

I've been using firefox for a little while- maybe three months now. I'm no expert on any of the config options. I run firefox using the built in VPN that my friend showed me how to enable, and I've been using it since. But now, as of roughly today, whenever I enable the VPN, no websites will load. At all. When I turn it off, they load instantly. But whenever I turn it on, it just gets stuck loading forever and ever, never actually getting anywhere. I tried enabling network.dns.disableIPv6 in the config page, because that's what I saw on a mozilla support page- nothing. Didn't do anything. The browser.ipprotection.enabled is still on, and I didn't change anything in settings. There was a firefox update very recently, but everything still worked with the VPN on. I just updated my computer, but I don't think that's it either because it wasn't loading things earlier today either. Not sure how to fix this. Please help?

Tabs will crash over and over again. I can barely look at any given page for longer than a minute or two. What happened?? Firefox was never like this before. It just crashed in the middle of me typing this LMAO. Using Brave in the meantime. This is ridiculous.

So that I don't uninstall it right away, I need instructions on how to disable this extremely ugly color scheme and design. Does Firefox want to lose its last remaining users to Chrome, too?

Why would something like this be changed without my consent? That's probably the biggest insult I've ever experienced.

I run the current version of Firefox (152.01) under Windows 11 Pro on a Dell Inspiron 15-3530 laptop. More and more frequently, I'm getting "Access Denied" messages when I click on a site link t56o an internal page. This happens on several sites, most notably Dell.com. I get the error in Troubleshooting Mode, and clearing the cache doesn't help. I've searched the information here, but all the responses seem to involve Windows 7 or Windows 8, not Windows 11. Can someone tell me how to resolve this situation in Windows 11?

Thank you.

Recently, I've been having a problem with signing in to things via my Google account – the problem being that I can't.

Whenever I click on the "sign in with Google", it redirects me to the "accounts.google.com" page, prompting me to choose my account, but once I do, I get redirected to "accounts.google.com/gsi/transform", which is just a blank page with nothing in it (see image attached).

I know this is not a problem with Google, as I have no problem signing in anywhere else.

This happened to me once before, but the reason was one of my extensions, which for some reason interfered with the sign in; however, this time this solution does not work. I tried disabling every single one of my extensions, turning all kinds of protections in the settings on and off, deleting all cache for all relevant sites, but to no avail.

I of course also tried looking this problem up on the internet, but whenever I found someone with this problem, the solution that worked for them was always just disabling an extension.

Thank you for any answer.

The problem is illustrated in the first image attached: Google Maps shows no image, just solid black. This does not occur in browsers other than Firefox.

After restarting my laptop, the same problem persists, but on first going to the Google Maps website the usual image of my neighborhood flashes, then disappears to be replaced by the black.

The second attached image shows four possible causes and fixes offered by Google AI. I tried them all, and nothing made any difference. This image also shows that the thumbnail image appears when my cursor hovers over the tab in which Maps is open.

The only thing out of the ordinary I did before this problem occurred was browsing the Firefox Extensions on advice of Google AI to turn off the intrusive "Genius" AI pop-ups, but I didn't discover anything relevant and I don't think I made any changes.

I'd welcome any suggestions for what to try next,

Is there a theme or some other way to restore the classic styling instead of having these pills everywhere? This UX doesn't even make sense...tabs used to connect to the page content they were displaying, now it's just some disconnected oval; I have trouble seeing which tab is selected now because it's all various shades of grey that are about half a bit of luminosity away from each other...looking for suggestions on the best way to restore some sanity to this UI...

On my Ubuntu computer, I find that the New Tab extension does not update like in my Windows computer.

Does the extension update at the same time as on Windows? Is there a way to make Firefox update the extension since going to Extensions does not appear to do that for this extension like those I have installed myself?

Even when I open a new tab in Firefox, the focus remains on the address bar. I'd like to know how to fix this. When I open a new tab, the address bar gets the focus, which I find inconvenient. Is there a way or setting to prevent the address bar from getting the focus and instead focus on the search box in the middle? I've searched online and tried the "settings in about:config" suggested in the search results, but it didn't solve the problem. Is it impossible? Firefox 153.0.3 64it

I have been using the browser extension feedbro and i really enjoyed being able to plop it out of the main browser window and 'add it to the taskbar' but for a couple days this option disappeared. Is there another way to do this? did "add tab to taskbar" get removed for browser extensions? or is this feedbro related? i am unsure how to test whether the button is missing for other browser extensions as well.

added two images showing that the button is gone from feedbro and still there for other tabs/pages

Yesterday, Facebook started to take longer and longer to load a page. Whenever I tried to post something and it took forevahhhh for it to show up on the timeline. I had to reload and repost several times since yesterday. All other websites are loading up just fine, but Facebook has taken as long as 30 seconds, sometimes even more before it refreshes a page.

Then.. it got worse. All I could see was the Facebook logo in the middle of the screen and nothing else.

Then it got even worse. As of this morning, I can't even get any results when I google Facebook! I put Facebook into the search bar, click return -- and nothing happens, absolutely nothing.

I'm not seeing any problems with any other website. I have already restarted my modem. I have already cleared out the cache and the cookies. I have restarted my laptop three times. I even looked up Downdetector, but there aren't any problems with the website in general.

Those are all the solutions I've found when searching about this, but the problem is only becoming worse, with everything I try. If there's something I need to change in Facebook settings, I can't do that, because now Facebook is completely inaccessible.

This is only happening on my laptop. Mobile is fine.