Diễn đàn hỗ trợ Firefox

Running windows 10. I installed the newest vewrsion of Firefox, and now I can see or find bookmarks anywhere. I tried the tutorial but I dont see anywhere in my computer where a list of bookmarks are.

Hi. Recently, not sure of which version as there seems to be a lot of updates :)

I'm currently on 152.0.1 on a Windows 11.

This problem doesn't happen on my Raspberry pi with 152.0 (aarch64) On my Android 13 I have allowed Pop-ups, via about:config, sort of, but there is no option to make Exceptions

So back to Windows 11.

As said I can enter an exception and that works when I load the site I want until I close Fx and I have to do it all again: Enter Domain : Allow : Save etc.

Once, and only once, I closed the [settings] and I'm sure after closing FX and opening it worked fine.

Just closed again and problem has occurred.

The issue arises on my site https://calstock.org.uk which opens a window to a UK weather site, The Met Office. It requires cookies etc. and shows it's own popup.

What I do is open it first in a new window, which is the popup I am referring to, then I load it in an iframe, then I close the popup.

That way the cookie is set by the new window that pops up so there is no query on my main page.

I only have the one extension, uBlock Origin which I have on all devices

Thanks

audio stops completely for exactly 0.4 seconds when un-pausing video, this affects any "interruptions" including skipping around, clicking on timestamps and any ohter type. issue stops completely when another youtube tab with a video playing is currently active.

i have tried any regular troubleshooting tips, including any and all forums i've found online to no avail. this is not happening in any other browser.

last night when i closed the system down, i had 5 spacial tabs with names, and apx 50 other tabs open, come to start the system this morning.. all gone.. nothing.. just a new firefox.. all my history.. gone... this is not good, as the 5 spacial tabs that i had where from seriten sits that need to be their,and now.. just gone.. the lot... and all the setting are correct..

6/22から突然、文字入力ができなくなりました。 ・Gemini/OpenAI/ダックAIなど、文字入力が出て打つが入力されないパターンと文字入力すら表示されないパターンがあります。

・最初の検索バーで文字入力ができても、検索結果のページからは文字入力ができなくります。これも文字入力しても打ち込まれていないパターンと文字入力画面すら出ないパターンがありました。

よろしくお願いします。

Hi,

After the last Firefox update, the "Open previous windows and tabs" setting stopped working, and I need to use the shortcut "Ctrl+Shift+T" after each start to restore the previous tabs.

Is there any solution for this problem or there is a way to downgrade to a version where "Open previous windows and tabs" works correctly?

My current version is 152.0.1 (64-bit).

thanks.

Every 3-6 months presumably when you update, it fully deletes all my login data from EVERY website, it has happened many times and is honestly so annoying. Please fix this.

I run the current version of Firefox (152.01) under Windows 11 Pro on a Dell Inspiron 15-3530 laptop. More and more frequently, I'm getting "Access Denied" messages when I click on a site link t56o an internal page. This happens on several sites, most notably Dell.com. I get the error in Troubleshooting Mode, and clearing the cache doesn't help. I've searched the information here, but all the responses seem to involve Windows 7 or Windows 8, not Windows 11. Can someone tell me how to resolve this situation in Windows 11?

Thank you.

I have always, for 15+ years, been able to use the system Print dialog box to create a PDF.

But as of updating Firefox to version 152.0 (aarch64), all buttons related to Saving a PDF, etc. send the document straight to the Printer to print a hard copy. There no longer appears to be any way to save a PDF.

Example scenario: 1.) Visit website 2.) Select Print (cmd-P, File > Print) and open the 1st print dialog box 3.) Select "Print using the system dialog..." 4.) Select PDF in the 2nd dialog box. 5.) You used to be able to save the PDF at this stage, opening Finder, naming the file, and choose the Save DIR. However, as of this latest update, even after the Finder File Name dialog box, hitting Save at that stage sends it to the printer to print a hard copy.

Pressing PDF, Save as PDF, Open in Preview, and Save as Adobe PDF all send the file directly to the Printer to save it.

I've got tons of receipts and things to save for work in PDF and FF was always great at this. What happened? Is this a feature or a bug? Any and all advice is welcomed.

Running macOS 26.5.1, M2 Pro, macbook pro.

Hello, Im using localized (Lithuanian) version of Firefox. Several updates back, Firefox started including russian and Polish in preferred languages by default. Personally i know how to remove those for myself. However, since im managing around 300 computers in a school. This starts to become an issue. In Lithuania we only have one official language. And when pages in a school start opening in foreign (russian) language this starts to be quite annoying. I would love to keep using Firefox but i need help.

I just bought my boyfriend a new iMac. We are having trouble loading many sites and platforms using the latest Firefox browser. The list is growing but includes Facebook, Meetup, Wikipedia, chess.com, nytimes.com - in all cases, rather than a login screen, we get an error message or a home page loads with no access to other pages or login area. I've cleared the cache, restarted, tried going directly to the site to log in, but nothing works. Everything is fine when using Chrome, but we prefer Firefox. Is this a conflict in the new Apple OS? Is there a fix?

The homepage for Firefox has not loaded correctly since the new updates of a month or so ago (maybe a bit longer). The windows all just scroll from left to right with no data. The widgets showing date, time, etc show up, but the 12 windows for stories just grey scroll left to right. Someone said it will fix itself. Ok. Any ideas out there?

(AI written summary of troubleshooting steps taken before making this support thread)

Firefox version: - 152.0.1 Release - 153.0 Nightly

OS: - Windows 11 build 26200

GPU: - NVIDIA GeForce RTX 4070 SUPER

Codec package: - Microsoft HEVC Video Extensions installed from Microsoft Store

Problem

Firefox does not expose HEVC playback support, causing Twitch to disable 1440p streams encoded with HEVC.

The same machine can play the same HEVC Twitch streams in Chrome immediately after installing HEVC Video Extensions.

Expected result

Firefox should report HEVC playback support and allow playback of HEVC streams, as Chrome does on the same system.

Actual result

Firefox reports HEVC as unsupported.

about:support:

codecSupportInfo: H264 SWDEC HWDEC VP9 SWDEC HWDEC VP8 SWDEC HWDEC AV1 SWDEC HWDEC HEVC NONE

Troubleshooting already performed

- Installed Microsoft HEVC Video Extensions - Rebooted Windows - Updated NVIDIA drivers - Verified hardware acceleration is enabled - Tested with a brand new Firefox profile - Tested with Firefox Nightly - Confirmed Chrome can play the same HEVC streams

Additional observations

Chrome: - Twitch 1440p becomes available immediately after installing HEVC Video Extensions - Twitch Stats for Nerds reports:

 hev1.1.6.L150.90.0.0.0.0.0

Firefox: - Twitch reports that the browser does not support the required resolution - 1440p remains greyed out - about:support continues to report HEVC NONE

Reproducible tests

Firefox console:

MediaSource.isTypeSupported('video/mp4; codecs="hev1.1.6.L150.90"')

Result: false

MediaSource.isTypeSupported('video/mp4; codecs="hvc1.1.6.L150.90"')

Result: false

navigator.mediaCapabilities.decodingInfo({

 type: "media-source",
 video: {
   contentType: 'video/mp4; codecs="hev1.1.6.L150.90"',
   width: 2560,
   height: 1440,
   bitrate: 8000000,
   framerate: 60
 }

})

Result: {

 supported: false,
 smooth: false,
 powerEfficient: false

}

For comparison:

MediaSource.isTypeSupported('video/mp4; codecs="av01.0.08M.08"')

Result: true

navigator.mediaCapabilities.decodingInfo({

 type: "file",
 video: {
   contentType: 'video/mp4; codecs="av01.0.08M.08"',
   width: 2560,
   height: 1440,
   bitrate: 8000000,
   framerate: 60
 }

})

Result: {

 supported: true,
 smooth: true,
 powerEfficient: true

}

Additional note

Setting:

dom.media.webcodecs.h265.enabled = true

causes HTML5 codec test (https://html5test.co/) to report H.265 support, but does not change:

- about:support - MediaSource.isTypeSupported() - MediaCapabilities.decodingInfo() - Twitch HEVC playback availability

Question

Is this a known issue with HEVC Media Source Extensions support on Windows 11 build 26200, or is there another requirement for Firefox to expose HEVC playback capability through MediaSource and MediaCapabilities when the Windows HEVC codec is installed and functioning in Chromium-based browsers?