Firefox Community Forum

Hi!

I am getting messages that I am blocking ads for many of my internet requests. I had never received these before but all of a sudden I started to get them. I have tried a number of things but nothing works.

I am running Windows 11 and do not have any Ad blockers.

my firefox is taking forever to load any type of page, and in addiition the thunderbird is also slow. I re-downloaded mozilla, but it is still downloading so skow. just last two days, and when I say slow like 2 minutes to open a page. HELP

I am locked out of different accounts currently. (using desktop, windows 11) While logging in, I get a pop up, from Windows Security, INSERT YOU SECURITY KEY INTO THE USB PORT'. Pop up says request comes from Mozilla Corporation. See attached screenshot

How do I turn this security feature off?

I use the URL BVN.NL to display videos, however it comes up with a message; "General Source Error" or "Video decoder or demuxer had an error with content" But if I use the Chrome browser, there are no problems.

Peter van Tol pvt1427@gmail.com

I have a laptop ( screen 1) connected to an external monitor screen 2) and extending the desktop. Firefox is running on the external monitor and a site I use has frequent pop up windows with tick boxes to select. With Chrome & Edge I can get the Popup window to open on the external monitor where the browser is running, but with Firefox the pop up window always opens on the Laptop screen. Is there a setting to get the pop up window to open on the same screen that Firefox is open on?

I have a Windows 11 PC with Creative Sound Blaster Z sound card. The sound card and Windows settings are configured for 5.1 speakers and both test OK for sending sound to all 5.1 speakers correctly. Additionally, I can go to https://www2.iis.fraunhofer.de/AAC/multichannel.html using Chrome or Edge browsers and all the tests play correctly to all of my 5.1 speakers. However when I go to this same site (or any other with 5.1 audio) using Firefox browser, the 5.1 audio only plays in stereo (no audio to center or rear speakers - everything is down-mixed to the front L/R speakers only). I've double-checked that the Mozilla channel in Windows Volume Mixer is configured correctly (for output to the Creative Sound Blaster Z device), and none of the output audio enhancement modes are enabled in the Sound Blaster control panel. Firefox is version 136.0.4. Bottom Line: only Firefox seems to be having trouble playing 5.1 audio correctly. Any ideas what might be wrong or any settings adjustments to try?

Firefox keeps asking to update. When I click yes, it updates but then a User Account Control window pops up, saying that the update was blocked for security reasons.

When I click on any of my Instagram photo posts, I only get the background transparent gray screen but no post photo enlargement with comment and 'insights" link section. It does work correctly on other users' accounts. So am I asking the right entity here or is it a Microsoft problem? Thank you.

in the last couple weeks, every time I go into Firefox my bookmarks and bookmark toolbar are scrambled. (all messed up and out of order). I have to keep restoring from a good save file. How do I stop this from happening? I have even uninstalled and reinstalled Firefox, but that hasn't helped. I have imported the good bookmark file that I saved.

After today's 2025-04 Cumulative Update for Windows 11 Version 24H2 for x64-based Systems (KB5055523) update, Firefox does not allow me to log into my Dominion Energy Credit Union account (see attached login error screen). Using Firefox Private Browsing, however, DOES allow logging in. I have cleared the cache, restarted the browser, and restarted the computer several times. Please advise.

Hi,

I have vertical tabs enabled in Firefox. What's the way to eliminate this blank toolbar space (see image) Dragging it in the customization settings doesn't work, as it keeps coming back. It's not Flexible Space.

I cannot get supporrt.mozilla.org pages into dark mode. My eyes are not good and I can barely read these pages. I have Dark Reader enabled, but I cannot find any way to enforce dark mode. Is it possiblle and, if so, how do I do it, please?

Regards,

Bob

So when i first updated to 137.0 tab groups were working fine, then one day i couldn't create any more. I had a previous tab group, but when i deleted it, there was no way to make another. I tried dragging tabs on top of each other, tried right clicking a tab to "Add Tab to New Group" but there wasn't an option. I updated to 137.0.1 to see if that would fix it, and it didn't. I then tried to uninstall and reinstall still no. I turned my computer off and then on again and also no.

I'd really appreciate any help with this because i'm kinda tearing my hair out trying to find out what changed.

Hello,

I am experiencing an issue with HEVC hardware decoding in Firefox on Windows 10.

System information:

OS: Windows 10 (latest updates installed) Browser: Firefox ESR 128.8 GPU: (your GPU model) GPU driver version: (your driver version) Problem: In about:support under the "Media" section, I see that HEVC (H.265) hardware decoding is not supported, while on Windows 11 with the same hardware, it works correctly.

What I have tried:

Installed HEVC Video Extensions from the official Microsoft website. Enabled hardware decoding in about:config: media.hardware-video-decoding.enabled → true media.wmf.hevc.enabled → true Updated GPU drivers to the latest version. Checked HEVC support via FFmpeg – decoders are available. Expected result: Firefox should use HEVC hardware decoding on Windows 10, just like it does on Windows 11.

Actual result: HEVC is only supported in software mode, and hardware decoding is not working.

Could you please help me resolve this issue?

Thank you!