Firefox 技術支援討論區

Hi Team - I would like to change the primary email address on this Mac Mini to the one I use on other devices. When I add the secondary email address I get a message, "Account already exists" and the address is not accepted. I guess I could Delete Account and start again but that seems a bit drastic and I don't know what data might be lost. Any pointers please? Thanks, Ian.

Screen goes black when some videos play - audio continues, but screen is black. I am sire this is a Firefox problem - I have successfully watched videos using BING browser - same videos go black on Firefox. I have refreshed Firefox, cleared cache, restarted Firefox - cleaned cookies. Turned accelerator off then back on - because nothing changed. Does not do this with all videos, just some - some You Tube videos play, others do not. I have Windows 10 and McAfee Live Safe - all programs are current and up to dated.

I just downloaded firefox and this is not like the older version,hard to navigate,it tells me to click firefox ball,upper left corner and click options options is not there. I want to xfinity to open when I start firefox,I want to know where to go and how to do it

I have used both the latest downloads for Firefox and the Private Browsing and have the same problem. Tabs won't open. Even a new tab to open Mozilla support won't open; I had to copy the URL and then open in the Private Browsing program to get in here. Then, the tabs that were already open on various sites freeze. What's going on?

I am trying to change the keyboard shortcut of the Tools → Downloads menu (opening up the downloads).

I accidentally click that sometimes and it is quite annoying, so I thought I'll switch the shortcuts to a more complex one to avoid these mistakes ^+⌘+J and when I remap that in the Keyboard preferences, the new shortcuts shows up in the menu, and it starts working but the old shortcut ⌘+J is still working.

I believe that is a bug in Firefox.

Hello. I use developer's version of ff for a few weeks (currently on 107.0b2). I recently decided to switch back to stable version 106. However, when I run it it says

``` Using an older version of Firefox can corrupt bookmarks and browsing history already saved to an existing Firefox profile. To protect your information, create a new profile for this installation of Firefox. ```

So, how do I move from developer's version back to stable without losing anything?

(OS: debian 11, if it matters)

I'm having an issue in which the picture-in-picture pop-out won't stay maximized. It's been happening for a while. I will maximize it on one monitor while I work on another, and it will restore itself to the last size I had it periodically. Usually, if I don't maximize it again, it will change sizes again, a few seconds later, shrinking down to about a 480p sized window.

There's no rhyme or reason for when it happens. I could be in a different FF tab or window, or in a different program, or just sitting there not doing anything, and it can happen. Sometimes, it happens multiple times in a short period of time (just now, it restored itself 7 times in a row, less than 30 seconds apart). It never happens when the video is not playing, however.

This only started a couple months ago, but it got noticeably worse in the past week or so. Does anyone know why this might be happening?

Computer specs are: Windows 10, 10.0.19043, Intel core i5-7500 CPU, ASRock B250 Gaming K4 motherboard, 16GB RAM @ 2133Mhz, NVidia GeForce GTX 1070 GPU, Samsung SSD 860 EVO 1TB.

I run Firefox Developer Edition.

I recently added some lines to my hosts file (C:\Windows\System32\drivers\etc\hosts). Despite these additions, Firefox ignored the hosts file and loaded the pages I had blocked just fine. So I tried a multitude of options like disabling "Enable DNS over HTTPS" and eventually I got to work and the hosts file was respected.

So after thinking about it for awhile, I actually DO want Firefox to ignore the hosts file like it did before I made the change. I reverted the "Enable DNS over HTTPS" setting to its default of enabled, and I've tried everything else I can think of, but I just can't get it to work.

How can I configure Firefox to ignore the system HOSTS file and load blocked pages anyway?

Could really use some help.

Hello, We are developing an extension which is built on manifest v3. Right now in the firefox MV3 is not available by default and user has to enable it manually. I wanted to understand the timeline for the MV3 release. So that we can decide to support MV2 or not in our extension

I have Firefox 107.0b5 (64-bits) Snap for Ubuntu canonical-002 - 1.0 I use Ubuntu Mainline to update to newer kernels. Never had any problem doing that. I am now on 5.19.15. But when I upgrade to kernel 6 (which is now at 6.0.5) Firefox tabs crash. Reloading doesn't help. Each new tab I open gives the same crash message. I have to restart to get Firefox going again. So I removed kernel 6 and reverted back to kernel 5.19 and have no problems any more. But question, what is the problem between kernel 6 and firefox? Does anybody else experience this problem?

I have no other problems with kernel 6 with other programs or hardware or whatever, only firefox tabs crash...

Every time I work on the local environment a lot of my extensions go crazy on localhost, throwing enormous amount of errors. This makes console barely readable. Is there a way to disable messages thrown by extensions in the developer tools of Firefox Developer Edition?

Similar to this in Chrome with "Selected context only": https://superuser.com/a/1346827

Thanks.

I have a laptop with Ubuntu 22.04. Firefox 307 from deb package works perfect. I wanted to give a try to Flatpak variant 306, which works well too, except two finger gestures back and front won't work. Scroll works. Any scheduled fix for that? Would be cool to move to flatpack completely.

I've recently been having troubles playing videos on Firefox.

My school website uses Vimeo embeds, but recently when I've put the videos in fullscreen, after 4-5 seconds it stops responding. The video freezes but the audio continues, and the controls don't come up when I move the mouse. I can press ESC to exit fullscreen, but the controls are still gone and the audio keeps playing. Then after a few more seconds I get the warning "This page is slowing down Firefox, to speed up your browser stop this page".

If I don't use fullscreen but instead zoom in on the page, it also freezes. If I try the same things with Edge it does not freeze. I also made sure that it was only affecting Vimeo videos, by testing with other platforms and other vimeo links.

I found previous reports of this issue, but all of them were either on Linux, or it was an issue with flash player, which is not relevant anymore.

Not quite sure how to debug this but I would be happy to provide further info. It's really important that it works again :/ Thanks in advance!

My repro steps: 1. Find a video on https://vimeo.com/watch 2. Play it and enter fullscreen 3. Wait around 6 seconds

I'm having an issue where firefox is acting as if there's something blocking pages/content. I do not experience the issue on any other browser.

I first noticed it trying to log into one of my accounts. The login portal redirects the page to a success screen and then to the home page. With firefox after entering credentials it shows a blank page with a 500 error instead.More specifically I believe it has to do with an api for "duosecure" (checking for multi factor auth)

another example is trying to download chrome remote desktop - normally you click their download link and pauses the current page while it triggers a popup to chrome's page to download the extension. It does this in any other browser I try except firefox.

This is on a clean install of windows 10 and a clean install of firefox. I am on the latest version of firefox (tried 106 and updated to 107 via the beta options) I have: - cleared cookies and cache - restarted firefox - tried safe mode - tried with and without extensions/addons and have removed all - uninstalled firefox as well as deleted all appdata folders - tried unchecking hardware acceleration - setting dns to none and changing the dns server options - turned off any setting i could find regarding popups, blocking sites etc - manually turned off enhanced tracking - gone through windows firewall and security settings to turn off everything that i could find that was "on" - rebooted computer - rebooted router - used the "refresh" firefox to set it back to defaults - tried connecting to the internet via ethernet and wifi options - windows updates Note: logging into other things such as gmail or facebook are fine on firefox but they don't seem to trigger redirects to outside sites.

Tell me how to configure profile chooser to not show profile location when mouse hovers over it for 2 seconds, make the time necessary to show profile location 10 seconds, or disable the showing of profile location when hovering over profile in chooser.

I have recently updated my site to run off a different hosting provider, and CloudFlare, a long needed change to my site. However, in doing so, my site has become unreachable on my laptop, with firefox (and other browsers) still thinking that my domain is attached to the old nameservers, causing it to redirect to the "site not found" page of my previous hosting provider. I have tried flushing my system's DNS cache, clearing my browser cache, clearing the browser's DNS records, all to no avail, however, I do know my site works, as on my mobile phone with basic Safari, the site works fine.

my system is on Ubuntu 22.04, and running firefox version 107.0

FireFox V. 107.0 -MBP-High Sierra.

Lately the last couple of months when I google search webpages then select them, Fire Fox doesnt bring up the article, Its been happening a lot and getting really irritating. So I bring up Google Chrome and it always brings up the article. SEE THE PICTURES. I use only Fire Fox as my browser, I keep Chrome around for when Fire Fox doesnt want to work properly. As you will see in the pictures the same website for both browsers. Fire Fox wont show the article no matter how many times I refresh the page or shut FF down, or reboot my MBP, but Chrome works perfectly every damned time. Why cant Fire Fox open the article but Chrome can? I need your help, any advice is greatly appreciated. SEE THE PICTURES.

Hello.

It seems I get a problem or two almost always with a new update lately. I have been using an userChrome.css to reduce the width of sidebar but the latest version 107.0 now ignores it and have a wide width even at the narrowest. Mine currently is set as, "#sidebar {min-width:30px !important; max-width:none !important;}" This no longer works. Your support much appreciated.

Regards,

OneDrive web (onedrive.live.com) doesn't show any files/folders. The area where the files/folders should be displayed is just empty. Now the reason I believe this might be a Firefox issue is because I don't have that problem when I use OneDrive on a Private window. OneDrive on a Private window works just fine, the issue is on the regular non-private window where I wan't my session to stay open.

I already tried clearing 'everything' including cookies, site settings and offline website data. I checked all the boxes and the issue persist.

See attached screenshot.

Thanks!

Since upgrading to Monterey, Google search pages show almost no text in Firefox. Google searches in Safari and Google Chrome are completely fine. Only Firefox is showing the problem. The blank text includes dropdown menus too - all options inside them are blank. Currently on Firefox v107.0, but the same problem happens with older versions.

If I go into Troubleshoot mode, the Google searches are working fine. I have refreshed Firefox, Cleared the startup cache. But the problem persists. I uninstalled Firefox from the machine, restarted the computer. Did a fresh download and install, haven't signed in so there are no addons/extensions to cause problems.

This is happening on both an Intel Mac and an M1 Mac running Mac OS 12.6 Monterey.

I attach one screenshot showing the same page with and without troubleshoot mode on. The second screenshot shows another page of results including what looks like weirdly encoded characters.

I've followed all the suggestions in the support page but nothing has helped. I'd really appreciate any advice on further troubleshooting. Thanks in advance for any help.