Firefox 社群討論區

I host a website, and don't want browsers (particularly Firefox) offering modified versions to others. Is there a header or something I can set webserver-side to disallow Firefox from offering the option?

This doesn't work:

add_header Cache-Control "no-store, no-transform, public" always;

Hello,

I'm writing because I’ve encountered an issue with the tab groups feature in Firefox.

Some time ago, after a browser update, I noticed a new feature that allowed me to group tabs thematically — I could name each group (e.g., "Study", "Work"), choose a color for it, and save and close groups to reopen them later. I found it very useful and used it a lot.

Last night, I decided to declutter my browser and closed several tab groups using the built-in menu. A bit later, I shut down my computer, but perhaps too quickly. This morning, when I turned my computer back on, Firefox was very slow to start. After a restart, everything seemed to work fine again, and the open tabs were restored.

However, all my previously saved (but temporarily closed) tab groups disappeared. In the tab group menu, I can now only see the ones currently open. I’ve searched through all the settings and history but cannot find any way to restore the missing groups.

Is there any way to recover the tab groups that I had previously saved and closed?

Thank you very much in advance!

Hello,

In multi-window browser sessions on Linux, the "Recently closed tabs" menu shows a list of URLs relevant to the parent (aka current) window, and that is both perfectly logical and highly useful. It makes it a lot easier to find that specific URL you're looking for, if not only because it increases the chance that it hasn't yet been flushed out of the recently-closed list.

I have a very distinct memory that this was the case on Mac too for the URLs showed by this menu when accessed via the "hamburger menu". I'm positive that I accessed the function via the hamburger menu rather than the faster way via the menubar for that very reason. And I just realised that it's no longer possible starting with at least v143.

With the Mac's global menu bar it would stand to reason that it presents lists that are "global" to the session, but I see no good *usability* reason that would justify *not* using window-specific lists under the hamburger menu.

One could of course argue that it's confusing and a "burden" to the user that s/he would need to remember in which window the looked-for tab once lived. But that argument would apply to all platforms, and this is supposed to be about *recently* closed tabs and one has to assume that the majority of users have no issue remembering in which window they have (or had!) a given tab open. (And that otherwise they'd be using a singe window, probably maximised to occupy the entire screen ;) ).

The offline package download speed is too slow and sometimes fails. I hope it can be provided separately, like interface language packs, just as Debian has separate interface language packs.

After upgrading my 128 esr to 140 esr, some sites stopped opening. In regular versions, it has not opened for a long time. There are many such sites, for example, qwen3.app or temp-mail.io. It thinks for a long time and finally a message that the time has expired. Chromium is ok.

This one is puzzling to me: On a website with login, whenever I click on an link to a pdf, a new tab opens (my normal setting) and immediately crashes (not my normal setting ;)). However, everything is fine elsewhere on the web, even on the same site in the sections without login. Here are some observations that may or may not be connected to this:

• If I right-click and open in new tab/window/download, everything is fine
• When I return to the tab where I clicked the link, the page reloads - independent of whether I did anything in the crashed tab
• the site-admins were not able to reproduce the problem, also it seems fine for other users
• the problem persists in troubleshooting mode, also manually disabeling extension did nothing, emptying cache etc. also nothing.

It is not like this is making me switch browsers (although no crashes in edge), but it bothers me to have no idea why this is happening. :) Maybe someone here feels the same? Thank you for reading either way!

Hello,

After recent macOS updates, it appears that Firefox would get stuck when trying to access passkeys stored in macOS's passwords or keychain apps. I run into this issue with both the following two combinations of Firefox versions and macOS

144.0.2 on macOS 26.0 Tahoe

140.4.0esr (aarch64) on macOS 15.7 Sequoia

Any insight is appreciated!

I went to Wirercutter from the NY Times, tried to search and got the result "HTTP header is larger than 10240 bytes." I performed the same action with Chrome on the same machine with no problems. I am on Firefox 140.4.0.esr running on a Slackware64/15 machine.

I was able to use it this morning from my macbook. But the afternoon I was on sites where my passwords usually fill but now everything is empty, everything had been deleted. I tried to log out and back in to mozilla and sync, but everything is gone. Over 100 sites and passwords. How this happened ? Where can i ask for help since Mozilla doesn't offer any.

I recently ported from chrome to firefox about 3 days ago and was tryin to access the dropdown menus on this website https://www2.gov.bc.ca/gov/content/governments/government-id/bc-services-card/your-card/get-a-card

I realized it wasn't working so I turned off my adblocker (ublock origin), refreshed the site and still not working.

Also attempted to use troubleshoot mode and still does not work.

Cleared cache + cookies and used troubleshoot mode and nothing working still.

I lastly checked the website was working by opening the same link on chrome after all that and it works perfectly fine over there. Any ideas what could possibly be the issue?? I basically have a fresh install of firefox with no changed settings besides anything that might of been copied over from Chrome when firefox automatically asks you to migrate your stuff over, and used the troubleshoot mode + clearing cookies and cache

Power outage after using a new Imac for 2 weeks. Now no bookmarks and no History showing in Firefox. I followed all the steps given in SUPPORT 1. Export HTML bookmarks from old computer. Import on new computer. 2. Load Backup bookmarks (JSON file) to flash drive. Load into new computer. 3. Copy latest Bookmarksbackup file found in new computer to Desktop.

'Each of these methods hit the same brick wall'. Firefox Menu > Bookmarks > Manage Bookmarks > Library Screen and choose "Restore" or "Import Bookmarks from HTML" THE SCREEN IS BLANK WITH NO CHOICES TO PROCEED FURTHER.

the attached image showsThe most I was able to accomplish is to copy and paste a bookmarksBackup file into a box and then nothing.

Why don't any of these recovery methods work?

What follows describes what I think is an annoying bug, and as I'm writing a draft of the bug report, I thought I'd post it here first to make sure it's understandable, and if possible to get others to confirm the bug.

In Tools - Settings - Files and Applications, with the following settings: - Always ask you where to save files is ON - What should Firefox do with other files? is set to Ask whether to open or save files

If a file type is not defined in the Applications list/grid, Firefox 140.4.0esr displays the Open or Save box (only Save for .exe files) If you click Save, FF opens a save window according —logically— to the path defined in Tools - Settings - Files and Applications - Downloads, so - The list of files shown to the right is correct, - But the path shown in the toolbar above it is wrong (> ComputerName > C:\ > in my case), - And the selected folder in the navigation column to the left is also wrong (ComputerName in my case)

and that always throws me off.

The bug appeared before FF v140.4.0

Test downloads - Go to https://openexr.com/en/latest/test_images/TestImages/AllHalfValues.htm and click the link below the AllHalfValues.exr title - Go to https://www.picsellia.com/post/tiff-tag-image-file-format and right-click on one of the pictures at the top, select Save Image as from the context menu.

Please post a brief message below to confirm or invalidate my finding. Thanks!

So my question is Firefox is on my Cent OS 10 machine and it only shows the close button on the upper right corner, I would like to know two things, 1. How to add the Minimize, Fullscreen buttons to just the close button on the upper right corner. 2. How to get my menu bar back - the home button and all of the other goodies that normally show on the left of the browser just above the Forward, back and refresh buttons?

Thanks in advance for the help.

no matter what I try I cannot get any content from HBO max, crunchyroll, or spotify to play. I feel as though I have tried every troublshooting step. In firefox 140.0.4 64 bit on windows 10 I have:

-turned DRM off and on -disabled and re-enabled widevine -disabling all extensions -try in a private tab -turning off tracking protection -clearing cookies/cache/site data -uninstalling and reinstalling firefox -trying on firefox nightly -trying on other firefox based browsers zen, librefox same issue. chromium based browsers and firefox on my windows 11 laptop play drm content like normal -manually installing older version of widevine -changing useragent to chrome(this triggered cloudflare and would not let me pass) -making another user in windows and trying there

the error i get on crunchyroll is code: DRM-0 and on spotify it loads but the play icon does nothing. in hbo max i get error code 1k-0003

At this point I don't know what else to try, If there is not another solution I probably try to just switch to brave browser or wiping this pc and reinstalling windows.