顯示下列標籤的問題:

Mozilla Connect navigation issue

Hopefully this may reach Mozilla Connect maintainers/developers. After posting a topic or a comment in Mozilla Connect, I struggled to find it. Somehow I found out there … (閱讀更多)

Hopefully this may reach Mozilla Connect maintainers/developers. After posting a topic or a comment in Mozilla Connect, I struggled to find it. Somehow I found out there is a page "My Unmoderated Items", which is not referenced from my account, from main menu or anywhere reachable. Once you know the link or leave it open, it looks fine, but finding the page again is a real struggle.

Would you please add "https://connect.mozilla.org/t5/premod/moderationitemspage/tab/unmoderated:idea" to all relevant menus so that the user can find it easily?

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Media Player Support

To whom it may concern, I have attached a picture of the error message I get when trying to play a video. I know the website is not at fault as I can use your competitors… (閱讀更多)

To whom it may concern,

I have attached a picture of the error message I get when trying to play a video. I know the website is not at fault as I can use your competitors browser (Chrome) and the videos play with no issue. I have also tried a few media player extensions with no success. Please help me find a solution so I do not need to use another browser. Thanks

Sam [email address]

Solved 封存 8 495

Dark reader activation

I PAID for "dark reader" I got the activation key but I cannot activate it because the instructions says go to "MORE" and there is NO "MORE"! I hunted all over the settin… (閱讀更多)

I PAID for "dark reader" I got the activation key but I cannot activate it because the instructions says go to "MORE" and there is NO "MORE"! I hunted all over the settings & extension & themes, but I cannot find anyplace to activate this extension. Did I just waste my money? I have poor vision, I NEED a dark page with white letters. Thanks to being a touch typist, I don't need to see the keybord or page to type but i can't see what I am typing on a dam w hite page! I now cannot click on "Email me when someone answers the threadil"

Solved 封存 8 495

Cannot uninstall PWA created in Firefox 143.0.1 on Windows 11

I'm not able to uninstall PWA apps created in Firefox 143.0.1 using Windows 11 usual uninstalling procedure. If i click "uninstall" in Windows Start Menu the app remains … (閱讀更多)

I'm not able to uninstall PWA apps created in Firefox 143.0.1 using Windows 11 usual uninstalling procedure. If i click "uninstall" in Windows Start Menu the app remains installed. PWA apps created with Firefox do not show on Windows 11 installed apps list so I cannot uninstall them. I haven't found any guide on the web on how to uninstall PWA created from Firefox. So, how can I effectively uninstall those PWA apps? Thank you in advance for your kind answer. Regards.

封存 5 488

I signed into my firefox account on my wife's computer and now ALL of her bookmarks and passwords are mixed in with my data

I signed into my firefox account on my wife's computer and now ALL of her bookmarks, passwords are mixed in with my data. I've signed out of both accounts on that compute… (閱讀更多)

I signed into my firefox account on my wife's computer and now ALL of her bookmarks, passwords are mixed in with my data. I've signed out of both accounts on that computer. I've signed out and relogged in on my computer. This is not a temporary issue. All of her data is somehow in my account. This seems like a MAJOR security flaw of the software. Were both using Windows 11 computers.

Solved 封存 5 478

How to disable AI in Firefox completely?

With Firefox 144, there is unasked for/unwanted AI introduced. How do I ensure that all AI is completely disabled in my browser? I found a link describing some settings, … (閱讀更多)

With Firefox 144, there is unasked for/unwanted AI introduced. How do I ensure that all AI is completely disabled in my browser? I found a link describing some settings, but want to confirm this will disable ALL AI in the browser. I don't want it, don't trust the privacy/security holes yet to be found and would prefer it was not included in Firefox to begin with. The list I've found is:

  • user_pref("browser.ml.chat.enabled", false);
  • user_pref("browser.ml.chat.menu", false);
  • user_pref("browser.ml.chat.page", false);
  • user_pref("browser.ml.chat.shortcuts", false);
  • user_pref("browser.ml.chat.sidebar", false);
  • user_pref("browser.ml.enable", false);
  • user_pref("browser.ml.linkPreview.enabled", false);
  • user_pref("browser.ml.linkPreview.optin", false);
  • user_pref("browser.ml.modelHubRootUrl", "");

Will this do it? What about:

browser.ml.chat.nimbus

Do I need to clear that field to ensure I don't get some auto opt-in in the future as more and more of this "stuff" is put into the browser?

Why not leave Firefox as a security/privacy conscious browser and put out a separate AI browser (FirefoxML?) for those that are not as concerned. How does Mozilla ensure that no information is leaked through AI from sessions for professionals that must protect physician/patient, attorney/client information or other legally confidential information?

封存 7 478

Netflix not working with Firefox

Netflix stopped working with Firefox saying that an update is required. My Firefox and OS (Win11) are completely up to date. Update required Looks like your browser, oper… (閱讀更多)

Netflix stopped working with Firefox saying that an update is required. My Firefox and OS (Win11) are completely up to date.

Update required

Looks like your browser, operating system, or device is not supported. Please make some updates to access Netflix. Learn more about updates and requirements here.

Can't access your account? Contact us.

Solved 封存 2 477

V143.0.1 update what's new page display is odd.

Hi. The "What's New?" page displayed all this: __________________________________________________ Help us improve your firefox.com experience In addition to Cookies neces… (閱讀更多)

Hi. The "What's New?" page displayed all this: __________________________________________________ Help us improve your firefox.com experience

In addition to Cookies necessary for this site to function, we’d like your permission to set some additional Cookies to better understand your browsing needs and improve your experience. Rest assured — we value your privacy. Cookie settings Firefox home

   Features

Top Features

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   Free Password Manager

View all Firefox Features

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Download

Firefox is no longer supported on Windows 8.1 and below.

Please download Firefox ESR (Extended Support Release) to use Firefox.

Download Firefox ESR 64-bit

Download Firefox ESR 32-bit Download a different build

Firefox is no longer supported on macOS 10.14 and below.

Please download Firefox ESR (Extended Support Release) to use Firefox. Download Firefox ESR Firefox Privacy Notice Download

Firefox is no longer supported on Windows 8.1 and below.

Please download Firefox ESR (Extended Support Release) to use Firefox.

Download Firefox ESR 64-bit

Download Firefox ESR 32-bit Download a different build

Firefox is no longer supported on macOS 10.14 and below.

Please download Firefox ESR (Extended Support Release) to use Firefox. Download Firefox ESR Firefox Privacy Notice Release Notes

   Desktop Desktop Beta & Developer Edition Desktop Nightly Android iOS 

See what’s new in Firefox!

Release Notes tell you what’s new in Firefox. As always, we welcome your feedback. You can also file a bug in Bugzilla or see the system requirements of this release. 143.0.1 Firefox Release

September 19, 2025 Version 143.0.1, first offered to Release channel users on September 19, 2025 Fixed

   Fixed a tab crash experienced by some users caused by DLL injection. (Bug 1872261)
   Reference link to 143.0 release notes.

Get the most recent version

Download Firefox — English (US)

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Your system may not meet the requirements for Firefox, but you can try one of these versions:

Download Firefox — English (US)

   Windows 64-bit
   Windows 64-bit MSI
   Windows ARM64/AArch64
   Windows 32-bit
   Windows 32-bit MSI
   macOS
   Linux 64-bit
   Linux ARM64/AArch64
   Linux 32-bit
   Android
   iOS

Firefox is no longer supported on Windows 8.1 and below.

Please download Firefox ESR (Extended Support Release) to use Firefox.

Download Firefox ESR 64-bit

Download Firefox ESR 32-bit Download a different build

Firefox is no longer supported on macOS 10.14 and below.

Please download Firefox ESR (Extended Support Release) to use Firefox. Download Firefox ESR

   Download Firefox
   Download Firefox
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   Download for Linux 64-bit
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   Download for Linux 32-bit
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Firefox Privacy Notice All Firefox downloads Need help or want to leave feedback? File a bug Leave feedback Get Involved

Did you know that most of the content in Firefox Support was written by volunteers? Find out more Other Resources Developer Information Complete list of changes for this release Press Kit Mozilla and Firefox News Firefox Extended Support Release All Firefox for Desktop Releases Learn more about Firefox Get the most out of Firefox with how-tos and online security tips.

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Putting people before profits since 1998 ___________________________________________________ Wierd. Thanks. Greg

Solved 封存 2 469

Firefox behavior

Firefox is the default browser and pinned to the taskbar. When clicked, Firefox automatically opens places an additional icon in the taskbar. Once Firefox opens, in the s… (閱讀更多)

Firefox is the default browser and pinned to the taskbar. When clicked, Firefox automatically opens places an additional icon in the taskbar. Once Firefox opens, in the second icon, any new links open in tabs, which is my preference.

The first image is the pinned icon in the taskbar. When hovering it only displays Firefox. The second image is the additional icon, when hovering over this icon the active page thumbnail is displayed.

Prior versions of Firefox did not have this behavior on my Windows 11 desktop PC. I've tried various settings in about:config but cannot resolve this issue. Is there some reason two icons are now required in the taskbar when running Firefox?

Solved 封存 1 468

Auto-hide taskbar in Windows 10 not working properly with Firefox

I'm running the latest version of Windows 10 and Firefox 143.0.1. I recently bought my first OLED monitor, so I enabled auto-hide taskbar in Windows to try and reduce the… (閱讀更多)

I'm running the latest version of Windows 10 and Firefox 143.0.1.

I recently bought my first OLED monitor, so I enabled auto-hide taskbar in Windows to try and reduce the chance of burn-in. However, while it works for the most part, it seems to often break in Firefox where the taskbar will hide, but not reappear when I move my mouse pointer to the bottom of the screen.

You can replicate this issue by having FF not maximised, then dragging its window titlebar to the top of the screen and letting go in order to maximise it. At that point, the taskbar no longer pops up when you mouse over the bottom of the screen.

Many thanks for any help you can give.

封存 3 460

Sync Nightmare

I installed Firefox on my new computer. It imported setting from Chrome. That's not what I wanted at all. Now, I can't get rid of that information that was imported becau… (閱讀更多)

I installed Firefox on my new computer. It imported setting from Chrome. That's not what I wanted at all. Now, I can't get rid of that information that was imported because it synced. How do I get rid of this data permanently? I have Firefox on my old computer but I don't want to connect online for fear it will sync and contaminate my other Firefox installations. How do I clean out my online profile?

封存 1 459

Why do I have to provide so much personal information when making a donation to Mozilla?

Is it possible to make a donation to Mozilla without providing so much personal information? I got a message on Firefox today asking for a donation, but when I tried to d… (閱讀更多)

Is it possible to make a donation to Mozilla without providing so much personal information? I got a message on Firefox today asking for a donation, but when I tried to do that, I was asked for my home address. It's a general rule of internet marketing that people who use the internet would rather do anything than pay for something, so it's bad psychology to impose unnecessary conditions when you're asking for a donation. I don't have to provide my home address when I make donations to other organisations, so why does Mozilla need my home address? I apologize if this is the wrong place to ask this question, but I can't find anywhere else to ask it!

Thanks,

Shaun.

Locked 封存 1 459

Firefox built-in PDF viewer stuck in light mode when privacy.resistFingerprinting is enabled

Hi everyone, After enabling `privacy.resistFingerprinting = true` in `about:config`, I noticed that Firefox’s built-in PDF viewer (`pdf.js`) is always displayed in **ligh… (閱讀更多)

Hi everyone,

After enabling `privacy.resistFingerprinting = true` in `about:config`, I noticed that Firefox’s built-in PDF viewer (`pdf.js`) is always displayed in **light mode**, even though my system and browser themes are both dark.

I understand that RFP forces `prefers-color-scheme: light` to prevent fingerprinting, but this also affects internal components like the PDF reader. Unfortunately, the PDF viewer doesn’t provide a manual dark mode toggle.

Is there any **official or safe workaround** that allows keeping RFP enabled while still having the PDF viewer use dark colors?

Thanks!

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a website is requesting a new version of PHP

I cannot login into a website because they complain that I have an old version of PHP. Is that already included in Firefox? I am using Firefox Vers. 143.0.4 on a MacBook … (閱讀更多)

I cannot login into a website because they complain that I have an old version of PHP. Is that already included in Firefox? I am using Firefox Vers. 143.0.4 on a MacBook Air with MacOS Big Sur, Vers. 11.7.10 Shall I go to the PHP website and download PHP?

Solved 封存 8 456

Weather Widget on Homepage Only Allows me to Choose Canadian Cities

The weather widget on my FireFox homepage, as well as the information when I type "weather" into the address bar shows me as in Montreal QC, Canada. But I am in New Hamps… (閱讀更多)

The weather widget on my FireFox homepage, as well as the information when I type "weather" into the address bar shows me as in Montreal QC, Canada. But I am in New Hampshire, USA. When I try to type a different city name after clicking the 3 dots next to the widget and choosing change location the only cities that come up are Canadian cities.

I am not running any kind of VPN, and when I check my location with an IP lookup it shows me in the correct location, my locale settings in Windows are set the the US as well.

Thanks for any help!

Solved 封存 3 449

Firefox 115 ESR extended support

Please forgive me if this already exists here (I suspect it does). Search tools did not yield what I was looking for. TOPIC: Extended Support for Firefox 115 ESR First, l… (閱讀更多)

Please forgive me if this already exists here (I suspect it does). Search tools did not yield what I was looking for.

TOPIC: Extended Support for Firefox 115 ESR

First, let me extend a hearty thank you to everyone on the Mozilla team and in the community that is continuing work on 115 ESR. This is helping a number of people that cannot upgrade for various reasons.

115 ESR is the last hope for many who are stuck on macOS 10.12-10.14 or Windows 7-8.1. While these systems are considered *very* out-of-date (users who are still on them are often chastised) they have a place. macOS for example, completely removed any and all support for 32-bit software as of macOS 10.15 ("Catalina"). I have encountered people with needs for 32-bit to run older apps and so they often keep a system running 10.14 ("Mojave").

Now, can old 32-bit configurations be kept around and isolated offline? Yes. But for some out there who cannot afford to upgrade, or cannot be with out specific 32-bit software, they would be forced offline completely (assuming they follow best security practices, which many do not). I have personally deployed 115 ESR on a number of systems to help people in this situation.

For the time being, ESR 115 is permitting these users to stay online with some degree of security, at least where web browsing is concerned.

QUESTION: Besides active user count, what other factors are keeping 115 ESR in active security-only support mode?

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Sprache

Nach dem Update vom Oktober kann Firefox nicht mehr auf Deutsch angezeigt werden. Die Umstellung auf Deutsch in den Einstellungen haben keine Wirkung. Was ist zu tun? … (閱讀更多)

Nach dem Update vom Oktober kann Firefox nicht mehr auf Deutsch angezeigt werden. Die Umstellung auf Deutsch in den Einstellungen haben keine Wirkung. Was ist zu tun?

Solved 封存 1 449