Firefox 技術支援討論區

I updated to the latest version yesterday and now my Bookmarks ,History and a few other things have gone into Dark Mode. I really don't care for it and have tried looking into my settings but I see nothing that I can do to go back to the normal white. I am using Windows 11 on an HP All In One Desktop computer. Is there anything I can do to revert back to the way it was? Thanks for any reply.

Yesterday my firefox updated to version 96.0. It changed to screen to dark theme. I prefer the light theme and need help to change it back. Thanks

Email me at [email]@Hotmail.com.

My browser updated to 96.0 (64-bit) about an hour ago. I've been running the Cheshire cat Theme for a long time now without it making the entire browser turn Dark (I just like what it did to the Tab bar and the Menu Bar). It didn't effect anything else -- not the Menus themselves and certainly not any webpages. But since the update--the Menus, the Firefox Home page, the Settings page, and even the Google search results pages--all have been showing up in Dark Mode. I switched around other themes I have and noticed that only the themes that are light in color stop everything from going dark.

It's a minor thing but I would really like to keep my set up as it was. I would really appreciate some help.

I just updated to 95.0. I use default Firefox home page with the Search bar. The background turned to black with this update. The background has also turned to black for some of my bookmarks or sites I go to. Settings, Language and Appearance, Colors, Text is Black and Background is White. I have never changed that. How do I get the background back to White?

I tried to disable javascript, delete pref.js file, resinstall firefox but without success.

Even the new reinstalled version crash everytime I try to close it.

This seems to have happened when I was trying to complete an order on a website...

So strange.

As of today Firefox does not open any websites, though Safari does. I am on an iMac and on High Sierra and until today all was well and has been for very many years.

There is no error message, just New Tab with a dot moving left and right

So FireFox just randomly stopped working all of a sudden.

It cant load any web page what so ever. (Like there is no internet, except that other browsers work normally.)

Ive tried everything from the support page, (Disabled all of the protection in firefox itself, removed and added it back in onto firewall safe-list), ive refreshed it (the option before removing), and Ive reinstalled it as well.

Nothing seems to fix the issue, the only way I got it working, and it was just for a little while before it blocked up again, is by running it in safe mode with SHIFT key. But it opened youtube, and then blocked up again.

I have not installed any anti malware programs or anything new that would cause the issue, neither have i updated my system recently.

When i reinstalled firefox (and started it completely blank and new) I started getting "sec_error_unknown_issuer" on every website I tried to open. And now, every time I close firefox (still does not work) after like 15 seconds post closing it I get a "Firefox has crashed" report.

Real shame. Great browser, been using it for ages :(

The themes I use normally have white backgrounds and black text. Following an update, the default colour scheme changed from a white background to a black background for web pages without the theme being changed. Google, YouTube, and Firefox pages are all using black backgrounds. I ensured that the Dark theme was disabled, selected the Light theme, then switched back to the theme I had been using; the black background returned when I switched back to the theme I wanted to use. I tried changing the colour settings under "Language and Appearance: Fonts and Colours: Colours..." to white text and black background and back to black text and white background, but no change was noticed at any point.

How do I change the page background back to white?

bold textThis is 2021. White-on-black is NOT an acceptable DEFAULT theme for our favorite browser.

duplicate https://support.mozilla.org/en-US/questions/1363900

unable to turn off safe search when using Bing search. After clicking the more bars on the Bing search page and setting safe search to off, when checking if it is off, it has reverted to moderate. Firefox is vs 96.0.1. Setting is set to normal, not strict. Windows 10 preferences are set to safe search off. All caches have been cleared. I took off all extensions, ran malware bytes & cccleaner & anti-virus scan. I tried a refresh of Firefox. Nothing has helped.

Using Edge or Chrome browsers on the Bing search page, Safe search turns off as it should.

--There was a power failure, last night, which knocked off my computer.  That may or may not be related.  However, with both Edge and Chrome accessing Bing okay, it seems to definitely be a Firefox problem?

I have a custom theme on Firefox called Charlies Red. Up until two days ago, Firefox would always consider it to be in light mode (which I prefer) whenever I'd use it. Now, however, it's in dark mode, and the only way I can return to light mode is to give up my custom theme and instead choose Light as a theme, which I don't like as much as Charlies Red.

Is there a way to force light mode on regardless of which theme I use? One source said I could go to about:config and create a ui.systemUsesDarkTheme number, setting it to 0, but I tried it to no avail and so deleted the number.

I used to be able to have a custom theme and have system pages (home, settings, etc) be black - dark theme - but now the system pages are white - light theme. Is there any way to change system pages colour back to black and keep a custom theme?

Thanks.

Greetings. I can't open most sites I usually visit (even google.com) via my Firefox 98.0a1. This happens since today. All error codes are SEC_ERROR_LIBRARY_FAILURE.

Tried to:

• Disable DNS-over-HTTPS.
• Disable HTTP/3.
• Disable proxy (never had it enabled anyway).
• Disable sending info to Firefox developers.
• Change settings of DNS-over-HTTPS.
• Restart the browser (after each action).

Nothing helps me... But I still can visit some websites, but most common resources are not working for me. Please help me because I can't use Microsoft Edge without getting mentally ill. :/

I just updated and FF will not load any https site. I'm on Ubuntu 20.04

Secure Connection Failed

An error occurred during a connection to rocketchat.avature.net. security library failure.

Error code: SEC_ERROR_LIBRARY_FAILURE

   The page you are trying to view cannot be shown because the authenticity of the received data could not be verified.
   Please contact the website owners to inform them of this problem.

Learn more…

All of a sudden I have started getting "Secure Connection Failed" (see attached) on way too many websites. I have not changed ant settings or software on my computer. Please tell me this is something Firefox knows about and is fixing.

This morning there was an Ubuntu software update and afterwards Firefox wouldn't work, it just opened and hung without ever connecting to a website. So I uninstalled, purged and reinstalled from Ubuntu Software and everything seemed ok. However, whenever I now try to save something, for instance images, the save to directory will default to /run/user/1000/docs even though I have my downloads folder selected in settings. I can change to the directory I want to save to and it will save there, but when I next save something it will again want to go to the /run/user/1000/docs folder. Further, I find that a copy of anything I save has also been saved into that folder, creating a new sub-directory to do so. I tried clear data in settings but that didn't delete those files and they are protected in file manager so I can't delete them myself. This will fill my hard drive pretty quickly as well as being really annoying having to change the save directory every time. What can I do to rectify this? I've now got version 96.0 (64 bit) installed.

I've used firefox on my current pc ever since i'd set it up about maybe two years ago(??) , it's only today within this hour i'd run into my current problem which renders the whole browser completely unusable whereas any other browser works just fine. I haven't found any previous fix for this that actually works.

   What it currently does is it just refuses to load Any page at all , prior to now within the same hour it had started to essentially crap out after any amount of time (fast enough for it to happen multiple times over) where it would just stop loading anything. when it had done this it could be fixed after closing and reopening the browser, however now even that does nothing since after it's stopped working altogether.
   Either way , however , it had and still does also bring up an error post-close that says it's currently running and needs to be closed, and sometimes it brings up a crash report, neither of which fix anything - the first time it stopped loading anything and i'd closed it a firefox update was called for , honestly i dont think that even really did anything--
   Nothing i've read and tried has fixed this , and it'll probably be tommorrow before i try anything new since i would like to just sleephfhfh,,,, but so far i've tried:

- Starting firefox in troubleshoot mode (holding shift at startup) and doing a refresh through this - i'd readded my passwords manually after this. - Disabling all add-ons (i've only used ShinmigamiEyes, UBlock Origin, and Malwarebytes Browser Guard across the time i've used firefox, all of which long prior to this issue and im sure is not the cause). - Setting Network.Http.Max-Connections to 48 (had previously been defaulted at 900, reset to said default after this didn't work). - Restarting my computer (Windows 10 if this matters). - Troubleshooting my own internet (other browsers and other devices have no problem.)

   I plan to do a full scan with AVG tomorrow to see if it's a potential malware problem, which would be weird considering how instantaneous and on-and-off this issue had been until now.

   I don't know if this is even on my end but i've been using firefox as my main browser for a long time now and i'd hate to have to transfer everything to a different one because it's just decided to give up on me--
   if there's any additional potential fixes anyone would recommend i'd appreciate it, just what i've tried hasn't done anything and it's really disheartening ,  especially when i dont even know if this is on my end or not--

Hi.

I just updated my firefox to version 96. After starting it, none of the tabs is loading, regardless of the url. No problems with Chrome or other programs. After a few minutes I just get the error message telling me that firefox has crashed. I restarted Windows (10, 64 bit, updated yesterday) twice, checked my firewall, reinstalled firefox. None of it worked. :-(

It would be great, if you can offer me some help. Greetings Chris

Good morning, I was working this morning on the browser when suddenly the webpage I was in showed a connectivity error. When I tried reloading the page it did not load at all. I have tried with many other websites and none of them loads. I have tried waiting to see whether an error appeared, but nothing. Whenever I try to close the browser after a while (approximately a minute) it shows an error message that the process has crashed. I have already sent the report a couple of times before quitting the process from within the error message.

I run a Dual Boot system of Windows 10/Ubuntu 20.04 I am only experiencing the problem with firefox in Ubuntu and other browsers work correctly on the system. I have re-installed firefox with "sudo apt remove firefox" and "sudo apt install firefox" and nothing changed. I have also updated to the latest version, tried disabling all the add-ons and switching the connection to "no-proxy" as suggested in the support webpage. I don't really know what else to try

Thanks in advance for the reply and do not hesitate to ask for any further information you may require.

Hi,

I'm running on macOS 12.1 with firefox 95 (and also 96). Suddenly everywhere I try to browse it will not load the webpage. I did not change any settings while it happend.

I already tried disabling al my extensions without luck. I also removed all cache etc.

Is there anything else I can try?

Kind regards.