Forum der Gemeinschaft Firefox

.: Hello. A couple of days ago Firefox stopped displaying thumbnails of YouTube videos. I tried YouTube on other browsers and the thumbnails appeared as usual. On Firefox, they've disappeared, but only on my Windows 10 computer. The YouTube thumbnails appear on Firefox on my MacBook. The attached graphic shows what it looks like on my Win 10 computer.

Any ideas on how to solve this would be greatly appreciated. I have also searched the Internet and YouTube for a solution, but was unable to find one that works.

Thank you.

General / Startup / Open previous windows and tabs is set off; nonetheless it opens them.

This is on 142.1.0 64 bit Windows.

How can we turn it OFF?

When I swipe to the left, Firefox navigates Back & when I swipe to the right, Firefox navigates Forwards. It is VERY ANNOYING!!!! It's really easy to do this accidentally while scrolling around a large web page. When you go back, it deletes all data that was filled out on the web form causing DOUBLE the work. How do I turn it off please? Win 10, FF 142.0.1 64-Bit

Environment: Windows 10 x64 (22H2) Browser: Firefox v142.0.1 x64 Precondition: Master password set when opening the browser

The user gets full access to the browser (except for access to passwords) when they click cancel password entry. Or close the modal password entry window.

Why is full access to websites and bookmarks granted? An outsider can easily access the browser where you are logged into your email, as well as gain access to your Firefox account management.

I really hoped that without entering a password, no open tabs would load and access to the entire browser would not be granted.

When the master password will actually start working?

Thank you.

Best regards,

At the beginning of 2025, I created a private theme and installed it locally (Windows 10), consisting of a manifest.json and a GIF file. It worked perfectly. Now, on Windows 11, I'm trying to use the theme again, but when I upload the file (.zip or .xpi — via about:addons -> Install Add-on From File), I always get the message that the file is corrupted. However, if I test it temporarily under about:debugging, it works immediately without any issues.

I would really appreciate a solution! <3

I can browse and go to websites, but the "back" button is inoperative and the "refresh" buttton is inoperative on my latest Firefox install ... as is the "menu" tab at the top right of the page and everything else at the top (except for the "downloads" tab ... that works, everything else at the top is inoperative

in addition: I get my "home page" set with the links I want (and none that I don't want) and sometimes when I go to a website that I rarely visit, it tosses a "new favorite link" into what I already have customized

also, the "finish setup" tab just below that on the right side is still "active" even though I've finished setup, etc

seem to some or several glitches in this version

thanks for any help

Wolf

[edited email from public]

I'm on Firefox for Mac desktop and I'm finding it difficult to move bookmarks from the Toolbar menu to Other Bookmarks. I see that I can cut and paste, but I assumed I could drag and drop as I can in other browsers. Does drag-and-drop just not work for moving bookmarks in Firefox?

Rebuilt my computer, restored Bookmarks from 'bookmarks-2025-08-30.html' but the original 'Other bookmarks' (just below 'Bookmarks toolbar') is now empty and has been moved to the bottom of all my other bookmarks in a new 'Other Bookmarks' folder. How do I get the contents back in the 'Other bookmarks' (just below 'Bookmarks toolbar'). P.S. I have a backed up 'bookmarks-2025-08-30.json' as well as a ' bookmarks-2025-08-30.html' available, if that would help. Regards and Best, NP_145

When I sign in, multiple firefox open, causing my machine to run slow. I have to go to task manager, close all the firefox and start over. I usually have to do this several times before I can get signed on. Once on, the new Windows 11 seems to work well with Firefox.

I noted in the multiple firefox accounts the following Group or User Names in the Details section. Are these normal or could they be the source of my problems???

ALL APPLICATION PACKAGES ALL RESTRICTED APPLICATION PACKAGES ACCOUNT UNKOWN (S-1-15-3-1024-1238444810-1356253261-2257478630-1143196962-1563090664-2414759320-12821011916-4218287853) Following these were the regular System Admin groups I am used to seeing.

How to correct if a problem.

It seems that my main page settings aren't the same from one computer to the other. For instance, I use Roboforms password keeper and have an icon for it above the bookmark ribbon on one computer, but moving to the newer computer, that is missing. What am I doing wrong?

Dear Mozilla Support Team,

I am writing to report an issue I have consistently encountered while using the Firefox browser. Whenever I log into my Mozilla account, the custom theme I have selected for Firefox is reset to the default theme. This necessitates manually re-selecting my preferred theme each time I log in.

This issue is a minor inconvenience, but it disrupts my user experience. I would appreciate it if you could investigate this behavior. I am using the latest version of Firefox on Windows 11 Pro.

Thank you for your time and attention to this matter. I look forward to a resolution.

Sincerely,

Clóvis Lauriano laurianoperez@yahoo.com.br

The bookmarks on my taskbar are all of a sudden not showing up. I'm unable to drag them there like I used to. Also, the history and menu button on the upper right don't work now. I've restarted with no luck.

I'm having issues using Firefox with the Facebook site. Groups are slow to load and sometimes the chat and notification windows take forever to load with shimmering panels or a wait cursor displayed. I've cleared the cache and deleted the cookie, but that didn't rectify the issue. I don't have a problem with Edge.

I've gone through the various troubleshooting options over the last month or so and Firefox is still crashing constantly for me, even in Troubleshooting mode. The tabs crash when I'm using a Google Doc, YouTube, Discord, doesn't matter the site; I've submitted about 20 crash reports this morning alone and failed to submit several more:

https://crash-stats.mozilla.org/report/index/ced7bd3d-a768-4ada-a473-127fb0250827 https://crash-stats.mozilla.org/report/index/3886acf3-500e-406b-ab03-77b390250827 https://crash-stats.mozilla.org/report/index/bf00f2f0-4d1a-4364-b369-945170250827 https://crash-stats.mozilla.org/report/index/8568b66f-2058-45bd-a5aa-904540250827 https://crash-stats.mozilla.org/report/index/b651d050-ff74-40bd-ae42-1d4230250827 https://crash-stats.mozilla.org/report/index/b5e446ea-ed00-44cd-b68e-61dd80250827 https://crash-stats.mozilla.org/report/index/7febd586-de43-421a-b3c4-87f230250827 https://crash-stats.mozilla.org/report/index/bcc5ba90-f508-4349-aba1-e0baf0250827

Any help on this would be greatly appreciated!

When I'm playing videos on Mozilla and close the lid on my MacBook and reopen it, the video resumes playing. Is there a way to make the video pause when i close the lid and the video remains paused, when reopened? Just so used to this feature and really wanna avoid any embarrassment in public.

So i've lost access to my email on. my old mozilla accounts and upon logging in on a new device im being asked for a code to the email which i don't have access to anymore is there a way that my info can be synced to a new one. Thanks

Is there any way to find out if a point release is coming? In other words, I'm running 142.0.1. I'd like to know if a 142.0.2 is going to be released. Not necessarily when, but just if one is in the works and will be released at some point.

Thanks.