Firefox Community Forum

I followed your very helpful article and my bookmarks reappeared, but the error message is now showing up every couple of days.

Update: Several days later, this is still happening. I wish someone would please help.

Even though CPU and GPU utilization is very low during 8K60fps Youtube playback in the Firefox browser on my base M4 Mac mini, the struggles heavily to play this, drops tons of frames, and the video almost stops playing.

8K 30 fps is not problem, and since utilization is pretty low, that doesn't explain the poor performance.

So please optimize 8K60fps Youtube playback on all platforms in the safari browser, but especially on Apple SIlicon Macs.

Firefox uses too much memory, with 1 tab 1GB+, and with 4 tabs all 3GB+, this is not normal, the forum topic did not help, reinstalled and did not help, there are no more than 6 extensions, and they consume only 160mb.

i can not load in to a game pet city 2 and when i try to load it is say that they can not load my game because of Firefox please help with this problem it has been months I've have been having this problem

I have two Firefox tabs open on my browser. Task manager shows 35 tabs using 897 MB of memory. How do I make this stop? And why are so many tabs running? I have cleared cache, cookies, etc.

I went to my favorite web site this morning (dpreview/forums) and when it displayed I must have accidentally clicked some Firefox thing because the page was then overlaid with a thin orange highlight with the word PICK on it. I tried moving the cursor off the page but it only changed which segments of the page were highlighted. So I clicked and the page was replaced by just the menu section of the page, apparently that was what was highlighted when I clicked.

Now, no matter what I do, when I try to go to that url only the menu is displayed, the normal list of forums is missing. I've restarted FF. I've rebooted. I've cleared cookies and cache. I've refreshed the page. Nothing helps. Other web sites are fine. I can't imagine what this is for. A diagnostic tool or accessibility thing perhaps.

Please help. I'm running latest FF on latest Win 11.

I cannot tile my Firefox windows to left or right when I choose vertical tabs mode from settings. It works fine with horizontal tabs enabled. I am using Firefox 137.0.1 on Linux Mint 22.1 Cinnamon 6.4.8 with Linux Kernel version 6.8.0-57-generic, display server X11.

I'm experiencing an issue with the drag and drop functionality in my browser that's significantly affecting my workflow. Previous behavior:

I could drag any selected text to any area of the browser window to open a new search tab I could lightly drag links anywhere to open them in new tabs

Current behavior:

Now I must drag content specifically to the tab bar at the top to open new tabs This extra precision required is frustrating and slowing down my browsing

I haven't intentionally changed any settings, and this change happened suddenly. This functionality was extremely useful for me as I frequently need to open multiple tabs while researching. Has anyone else experienced this issue? Is this a new "feature" or a bug? Most importantly, does anyone know how to restore the previous drag and drop behavior? Thanks in advance for any help or suggestions!

I'm using Windows Live Mail 2012 (which yes is pretty old) and one of the problems manifests itself in Firefox so let me describe this, I'm asking here because I don't think Microsoft ever supports anything any more so yes I'm grasping at straws but here goes. If I click on an email preview in my email client it proceeds to try and open that content in an almost infinite set of windows. If instead I click on a web link in that content it proceeds to attempt to open an almost infinite number of tabs of copies of this content in Firefox, I'm not saying this is the fault of the browser but it's a weird problem. Finally if I try and open the website that I need to use to manage the memory usage of this limited memory cable provider email account, the website no longer processes that correctly either so after a short time I will run out of memory entirely and lose usage of the account so you can see why solving this is an urgent matter for me. (I already contacted the cable provider tech support and their considered opinion was I ought to pound sand since they no longer provide email accounts any more for anyone. I have a peculiar feeling that one possible answer involves doing complex editing in the Registry, I think I'd rather back out the update (although MSC wil probably just overwrite it again in 6 months anyway) but I guess either would be acceptable, I'm just wondering how come I'm the only person in the known universe who has seen this weird issue?

When I run firefox, the following commands lsof |grep -i firefox|grep memfd|wc -l lsof |grep -i firefox|grep memfd|grep DEL|wc -l produce values in the 20 000 or even 100 000 range.

For instance, currently with only 1 tab open - the form on which I type this question - I get $lsof |grep -i firefox|grep memfd|wc -l 19317 $lsof |grep -i firefox|grep memfd|grep DEL|wc -l 16362 And these numbers are still on the low side. In normal use (e.g., 10 tabs open), the numbers reach close to 100 000.

Some example lines of lsof: firefox 3883 135330 StreamT~s xxx DEL REG 0,1 27559 /memfd:mozilla-ipc firefox 3883 135325 Indexed~I xxx 156u REG 0,1 67108864 11945 /memfd:pulseaudio (deleted) firefox 3883 135325 Indexed~I xxx 160r REG 0,1 13192 78 /memfd:mozilla-ipc (deleted) firefox 3883 135427 StreamT~s xxx 132r REG 0,1 170 3110 /memfd:mozilla-ipc (deleted)

Although it may be a problem in lsof, this suggests that firefox performs a lot of memmaps that are later deleted, but are deleted in a way that leaves some left over state. Note that the "DEL" state in column 6 does not always agree with "(deleted)" in the right most column.

I first discovered this issue when my computer started failing with messages like pipewire-pulse[103898]: pw.mem: 0x55ce0273ac50: Failed to create memfd: Too many open files This could be a coincidence of course.

Current firefox version: 137.0 (but also occurs in other versiosn, e.g. 133.0.3) uname -r: 6.12.7-100.fc40.x86_64 OS: fedora 40

I browse using full screen in Firefox. After closing the app and reopening, the browsing window is just 1/4th the size requiring me to expand it, every time. Is this a bug?

I keep getting a pop-up for"sign documents online" in my Firefox browser. Several others have reported the same. It overlays the browser content so I can't use Firefox at all. My only option seems to be to uninstall Firefox and use a different browser. Is there a fix?

TikTok might not be working due to a few common reasons like a poor internet connection, server problems on TikTok’s side, an outdated app version, or too much cached data. Sometimes, the app might crash or fail to load videos properly. Restarting the app, clearing cache, or updating it usually helps fix the problem. bold text

Used to be able to access my Xfinity account on FireFox. Now, when I try to log in (after I type in User Name and Password and hit "Enter",) I get a blank screen except for the words: "a rendering error occurred: ." in the upper lefthand corner of the screen.

I am using a MacBook Air running Monterey 12.7.6.