Diễn đàn hỗ trợ Firefox

items dragged to overflow menu pop back out, will not stay there - dunno how to fix this.

Hate the "puzzle piece." Involuntarily upgraded to 115.25.0esr and it lost all my bookmarks, addons, history. How do I know which profile was the most recent, before the update added a new profile? How do I find my addons from the previous version? history?

i have a big problem with settings of privacy and security. the problem is i cant edit this option ( Allow Firefox to automatically trust third-party root certificates you install ) and its greyed out . i made everything ( refresh - troubleshoot - uninstall ) and with the first click on singing my account on Firefox and add my restore my add-ons after setting up windows this option become unavailable (greyed out) and cant edit it. i need a solution without going to set up a new windows because its so tiring to set up a new windows to edit this option. please give me a solution its emergency. thanks a lot.

In a few previous updates, FF keeps messing around with the New Tab layout, ruining its previous good look. I learned to revert it back to its former setting by disabling browser.newtabpage.activity-stream.newtabLayouts.variant-a and also browser.newtabpage.activity-stream.newtabLayouts.variant-b in about:config.

Now in Firefox 141, browser.newtabpage.activity-stream.newtabLayouts.variant-a has completely disappeared, no more allowing the poor user to get the look he wants.

Why? Am I missing something? What is the use of making the product worse or less user friendly?

I have a profile that causes odd behavior, within the profile, and to the OS.

Regarding the profile itself:

1. I use Multiple Tab Handler, which should allow me to move tabs on the tab bar with the mouse, but it does not (see image of proper behavior)

2. Normally, i can drag this padlock button to the desktop to create a shortcut. but now, it will not move/drag (see image 2)

3. I also have a backup profile from several months ago that has none of the above symptoms. However, If I substitute it's sessionstore.jsonlz4 file with the the one from the problematic profile, all the bad behavior mentioned above re-emerges.

I know this sounds strange, but, I also get external display issues when using the broken profile. These events are random, and manifest themselves differently, so I can't duplicate them. Essentially, these snips are examples of images from the taskbar tabs, or the clock area, suddenly superimposing themselves on the top portions of the taskbar toolbar area.

This is the view of my clock area (see next image 3)

In the following image, imagine that the portion on the left, that opens the start menu, is now hidden under what looks exactly like the clock area on the right, superimposed over it (see next image 4)

Those aberrations are removed by simply moving the mouse cursor over them, but they will continue to occur in any number of variations over any area of that top toolbar.

Is there a Session Manager that will save the session, to be later restored into that previous profile, but not also pass along the corruption?

AvailablePageFile: 9994584064 AvailablePhysicalMemory: 6990008320 AvailableVirtualMemory: 138533823639552 BackgroundTaskMode: 0 BuildID: 20250616215311 CPUMicrocodeVersion: 0x64 CrashTime: 1750858075 HeadlessMode: 0 InstallTime: 1750788070 ModuleSignatureInfo: {"Mozilla Corporation":["firefox.exe","xul.dll","gkcodecs.dll","nss3.dll","mozglue.dll","lgpllibs.dll"],"Microsoft Windows Software Compatibility Publisher":["msvcp140.dll","VCRUNTIME140_1.dll","VCRUNTIME140.dll"],"Microsoft Windows":["MpDetours.dll","wsock32.dll","dbgcore.dll","ktmw32.dll","winmm.dll","version.dll","propsys.dll","DWrite.dll","uxtheme.dll","dbghelp.dll","windows.storage.dll","kernel.appcore.dll","ntmarta.dll","CRYPTBASE.dll","msasn1.dll","ntasn1.dll","ncrypt.dll","bcrypt.dll","ucrtbase.dll","crypt32.dll","msvcp_win.dll","win32u.dll","KERNELBASE.dll","gdi32full.dll","WinTypes.dll","bcryptPrimitives.dll","wintrust.dll","shell32.dll","shlwapi.dll","user32.dll","rpcrt4.dll","SHCore.dll","ole32.dll","psapi.dll","kernel32.dll","advapi32.dll","imm32.dll","oleaut32.dll","msvcrt.dll","gdi32.dll","ws2_32.dll","combase.dll","sechost.dll","ntdll.dll"]} ProductID: {ec8030f7-c20a-464f-9b0e-13a3a9e97384} ProductName: Firefox ReleaseChannel: release SafeMode: 0 SecondsSinceLastCrash: 820 StartupCrash: 1 StartupTime: 1750858075 SubmittedFrom: Client SystemMemoryUsePercentage: 79 Throttleable: 1 TotalPageFile: 65870069760 TotalPhysicalMemory: 34067255296 TotalVirtualMemory: 140737488224256 UptimeTS: 8.00534 Vendor: Mozilla Version: 140.0 This report also contains technical information about the state of the application when it crashed.

This may be more in "settings" than in "search, tag, and share".

Since updating to the 140 series, the URL bar has what appears to be a nonremovable "what kind of search do you want to run?" activated by typing in the URL bar.

Do Not Want. That's the entire purpose of having the separate search bar. For those who only have the URL bar visible, that might make sense, but right in the core Settings I chose to have both the URL bar and the search bar. I do not ever want searches initiated from the URL bar.

Is there a way to remove this unwanted "extra feature"?

And a gentle hint to those doing interface tweaking and redesigns: Those of us who use "separation" features directly supported by the program — that is, not requiring an extension or theme — would really, really appreciate having our choices respected. That the separate search bar is already selected and visible, or having a full menu bar (and not just the hamburger symbol) visible, should be a hint that there just might be functional, safety, security, and/or disability-accommodation considerations behind that user's choice, and you shouldn't override it Just Because.

All of a sudden, I can't access several websites through Firefox that I have used for years -- but I CAN access them in other browsers, like Chrome and Safari. Also, Firefox no longer works with my password manager. Until about two weeks ago, I could always autofill login information, but no more.

What gives? I am up to date on my IOS (Sequoia 15.5) and on my version of firefox -- and my password manager app. Superfrustrating. I hate to have to turn to Chrome as my primary browser since I hate Google, but I might end up doing that and just not using Firefox anymore, after like 20 years of having it as my primary browser.

Hello, I received an email from you asking me to change my Firefox password for account security reasons. When I changed it, all the data synced in Firefox with my email was deleted. This upset me greatly because I lost important data and saved websites. Please restore the deleted data. Thank you.

I am using the latest Fiefox and i have disabled all adons i have tried everything I have changed my Facebook password every time i g try to share something on Firefox get a black box on the bottom right that says something wrong . I have tried to copy the entire hing but can not i got some of it I have even reinstalled firebox ans still can not share anything I have tried contacting Facebook but that does not happen no response i appears to work in Chrome on a noter Facebook account so it is Firefox. i will send you what i could get on the screen shot the part that is missing s the part that says something s wrong

A week ago I got a BSOD that ruined settings of most of my extensions and most likely some of Firefox's settings too (at least it erased my custom findbar.matchdiacritics value, but probably not just that). After that I moved Firefox's folder and re-installed it. I also created a new profile. The 2 profiles are synced. Because of that, the new profile got (almost) all the extensions from the old one automatically. Then, I decided to do a clean install of those extensions (the reason why is a story for another ticket). So, while both profiles were opened, I removed one extension in the new profile, waited for a bit and checked the old one to see if it got removed from there too. At first it wasn't, so I thought they are not synced (anymore). Yeah, sure, but once I removed all extensions from the new one, the old one woke up and removed all extensions from there too. Great! Awesome! Loved it wholeheartedly! It really had to wait until I removed them all, didn't it? Anyway, I had a backup of my old profile, so I restored my extensions and their settings on both profiles eventually. So now I have clean installs of Firefox and extensions. Back to the issue. I can't load Steam pages (at least store.steampowered and steamcommunity) normally anymore. They load forever, and if the blue dot eventually stops moving (after an insane amount of time), it's either a plain white screen, or badly loaded page with most images missing.

• Edge loads them just fine
• Steam client loads them just fine.
• If I turn on VPN plugin (I use Browsec), then it works. It's like that in both old and new profile. That's why I mentioned that funny little story before.
• Tried Troubleshoot Mode, didn't help.
• Tried to selectively disable some extensions, same.
• Obviously tried to remove cookies, Ctrl + F5 and whatnot. Btw, if I clean everything and try to load it, then it's (most likely?) a white page, but if I turn the VPN on and load it first, and then turn it off and reload it, then it will look a bit better, but still will load forever with some media missing. (Which kinda make sense since something was already cached.)
• Tried to change proxy settings from “Use system proxy settings” to “No proxy” and “Auto-detect proxy settings for this network”, nah-ah.
• Tried to disable DNS in Firefox's settings, no siree.
• The console throws different warning and errors every time (that are probably even unrelated). Or none at all.
• Probably tried something I already forgot about.

Also, it seems the culprit is actually Akamai (it's where the Steam stores its media) or whatever is preventing reaching it. Because it often shows something like “Waiting for community.akamai.steamstatic.com...” in the status bar for a long time. It seems like the problem is within Firefox's settings, and it also looks like settings aren't synced across profiles (or at least some aren't, I definitely had to configure them on the new profile manually). Anyway, I am out of ideas and my butthurt thrust is about to deliver me to Uranus. Thanks for your attention!

This started happening a few days ago.

I tried to drag a tab out of the main window to put it in its own window on my other monitor, but the tab just became unselectable, and if i scrolled in the tab bar, the tab icon and text would remain locked in place in the display while the other tabs moved behind it.

The main Firefox window also lost the minimize, restore, and close buttons. The only way to make the tabs work was to close Firefox and relaunch it.

I noticed this happened only after any app in the OS went full screen, be it a steam game, or another Firefox window, or a VLC window, or anything else that I did that made an app full screen in any of my monitors.

I am using Ubuntu 24.04 with KDE Plasma 5.27.12. Kernel is 6.14.0-29. Display server is Wayland.

Initially I thought this could be a problem with the snap version of Firefox, so now I've installed the deb package, but the problem remains. Firefox is the only app which presents a problem of any kind when any window goes full screen.

Here's a video showing what the problem looks like, in case my description was not clear. The ghostly tab in this video is the chess.com home page and you can see it as the third tab from the top right of the video, and it remains in that position as i scroll the other tabs, completely unselectable with the mouse.

https://www.youtube.com/watch?v=-mAfPS3_qkg

Any idea of what could be causing this issue to appear?

Thank you!

After tinkering with about:config (shouldn't have...) the background of every page that does not specify a body background color turns the color of my theme background color.

Using the firefox color pipette says its white, but it clearly isn't.

The theme i have is dark, making any page that expects the background to be white unreadable (without DevTools -> Body -> background-color: white)

I haven't been able to find the config that fixes it.

As of 7/10/2025, Xfinity Streaming does not open through Firefox. I much prefer Firefox to any other browser so I am a little mystified as to why all of a sudden Xfinity Streaming does not open. I receive my Comcast email through FireFox but when it comes to streaming content, the Xfinity logo just sits there and does not open.