Firefox Community Forum

Ever since this month's Windows 10 update I've been having problems with Firefox. I start it, the menu bar and tab comes up, but then nothing. I can't access any web sites. I tried removing the Windows update, then tried uninstalling and reinstalling Firefox, and then messing with the settings. In each case Firefox would work for a couple of days, then I'd have to start it three or four times to get it to work, then it wouldn't work at all. I've been using it for 10 or more years now (four on this computer) and have never had any problems before. I'm loathe to switch to another browser, but if this can't be fixed I won't have any choice. This is what happens when I start the program.

when i open firefox and have one tab open, doesnt matter what site it will freeze and i go to task manager and it says i have 15 open and ill end task and open again and it will say more or less

https://www.mlb.com/gameday/braves-vs-nationals/2025/09/17/776286/live

this site at mlb.com or any site showing a live game eventually freezes up and cannot be closed normally. task manager or re-boot is only way out, starting over with a new instance of firefox after ending all firefoxes.

this has been happening just this past few days, after firefox updated to 143.0 on windows 11 using defender, no other screwed up security software.

firefox needs to fix this, it is not likely anything with the site but rather with firefox latest update, as this has always worked before on this same computer.

Dennis Coleman

Firefox not responding on macbook M4 Macos Tahoe 26.0 I tried restarting Firefox I tried restarting my macbook But everything repeats. Use Firefox for a while and it freezes again. Tôi sử dụng Firefox mới nhất: 143.0.1

A couple days ago, some weird issues have started:

• All my bookmarks are gone
• Any of the buttons in the UI that open a smaller UI do not work (such as the 3 bar menu)
• Similarly, right clicking to open a menu (such as "Save Image") also does not work
• Any dropdown menus in websites seem to also not work. For example, in this very support page, I could not select an option in the "Which topic best describes your question?".

I can't restart and troubleshoot Firefox since I can't access the 3 bar menu.

Im using Windows 10 Pro 64 bit on a Asus laptop with 32GB RAM in it and a i9-9980HK @ 2.40GHz. It has a GeForce RTX 2060 graphics card in it with 6GB memory. I use it for work and need to have multiple tabs open at a time as a result. I always have at least 4 tabs and can sometimes get up to around 10. I also have Zoom running as well.

I keep seeing a ton of Firefox processes open when I look at Task Manager. Attached is a screenshot I just took with 7 tabs open. It shows 34 processes in the first clump with more open outside of that one.

I unchecked Use recommended performance settings and checked Use hardware acceleration when available but all that did is lower the amount of RAM being used by 100MB. I have 2 extensions enabled in Firefox, AdBlocker for YouTube and AdBlocker Ultimate. They have never been a problem before. This lag and massive overusage of RAM has only started in the last couple of weeks.

Anyone know why this is happening or how to reduce how much RAM Firefox is using? I like this browser and would have to have to switch to another one. Thanks in advance.

Dear Firefox Support Team,

I am writing to report an issue I’ve been experiencing with Firefox on my MacBook Air (M3, 8GB RAM). Recently, Firefox has been becoming unresponsive quite often, and the Activity Monitor shows significantly high memory usage. For context, I typically have two Firefox windows running simultaneously, with approximately 5 tabs open in each window (10 tabs total). This is when I notice the performance degradation and high memory usage.

To help you investigate, I’ve attached:

• A screenshot of the memory usage in Activity Monitor when Firefox is running.
• A screenshot of the extensions currently enabled in Firefox.

I am open to suggestions, such as disabling or removing certain extensions if they might be causing conflicts. However, I wanted to report this issue first to understand if this is a known problem or if there are optimizations planned for Firefox on Apple Silicon Macs.

Let me know if you need additional details, such as Firefox version, macOS version, or specific steps to reproduce the issue. I’d be happy to provide any information that can help resolve this.

Thank you for your time and assistance. I look forward to your response.

Best regards, Hemant

Firefox occasionally stalls during a page load or refresh. A quit/start sequence of Firefox resolves the stall without further action. Is there a key sequence that invokes a restart: Firefox 140.0.2 (aarch64), MacOS 15.5 (24F74)

Version 142.0 (64-bit) on my Dell Laptop. Screen will not refresh on address bar or using refresh button after screen sits for 1-2 minutes. The top menu bar will still work.

It seems that, randomly, the toolbar on Firefox keeps freezing. I can't reload a page, or even use the search function at all. It's only through opening a new window that the problem stops.

Is anybody else experiencing this problem, and is there any possible fixes?

I am on Windows for ARM devices and running Firefox 142.0.1 (aarch64). When I use Firefox for any extended period of time, I'll start to notice these blank icon pages accumulating when I hover over the icon on my taskbar. Nothing happens if I hover or click on any of them and clicking the 'x' on the right will not close them. They stay even after I close the browser and until I restart the computer. Has anyone seen this issue and know of anything that could fix this? I hesitate to reinstall right now, as I'm not signed into a Firefox account on this browser (this is my work computer). I appreciate any and all replies. Thank you!

Firefox used to start in a second on my Windows 10 PC. But lately it now takes about 10-20 secunds to start (on 143 beta). Is there any reason why it takes so much longer to start now? Is there any setting og tweak I can do to get it to start faster?

What's wrong with the new release?

Today i decided try the new firefox(140) since it's going to be ESR, but i'm getting hot-fan from a couple of tabs (particularly video streams). Second it's slower and seems to have 4second delay for shutdown..

The laptop is running linux mint with intel i5 (11th), tigerlake (iris xe) gpu. It might not be newest, but it shouldn't have a problem with regular web browsing.

Is it a bug? like it's not maxing my ram or cpu during use.

Hello. Yesterday when I started my PC, the Firefox browser wouldn't restore my previous session. This has of course happened before, so I restarted, but that didn't help. So then I have to restore all the pages myself, boring. BUT, when firefox doesn't remember any of my usual pages, I'm starting to worry. Then I think I want to update Firefox, and that's when I discover my main problem.....I can't access the menu in the three symbols at the top right (shown in the picture/attachment). I can't open my profile, can't open extensions, can't download anything or open the downloads icon, and most importantly, CAN NOT open the "Open application menu" (the icon with three horizontal lines), so THEN I have a big problem. The menu bar and everything there is available, but without access to "Open application menu" I can't reinstall Firefox. I can't save bookmarks either, or see if the bookmarks are in a backup or something. So, I don't dare delete firefox, then reinstall it, without knowing if I'll find my bookmarks again. I've tried saving them to a file, but I've never heard of a JSON file, and I don't know how to process it. I should also add that I deleted all my AVAST anti virus programs and files two days ago. And I have found out that I do have the latest firefox update. Hope someone can help me or give me some tips. I'm not particularly computer savvy either, just so you know. And I'm norwegian :) Thanx, Bendik.