Firefox Community Forum

I just opened Firefox on my Win 11 pc, and find all my tabs have gone. The setting to reopen last session is active, as before. I think FF updated itself earlier today. I also had occasion to look at it briefly on my synchronised android phone. I would like to: - get my tabs back - find a way to stop this haappening (it's not the first time).

Any advice much appreciated, thanks. Richard

https://www.vicroads.vic.gov.au/registration/buy-sell-or-transfer-a-vehicle/check-vehicle-registration/vehicle-registration-enquiry/ enter my rego and NOTHING HAPPENS. Tried it in Chrome and it goes to the next screen with my rego details. Cleared cache, flushed dns. Permitted 3 party cookies in settings. What is blocking it??

While playing chess at lichess.org, browser power management inhibit messaging to the system gets stuck on its current status. That is, if power management is inhibited by media playing on another tab while I play a game, it will get stuck in the inhibited state. If power management is uninhibited while I play (no media playing), it will get stuck in the uninhibited state. This persists until the browser is restarted even if all tabs are closed.

I don't believe it to be a system issue, as the problem clears as soon as the browser is closed. Chrome based browsers do not exhibit the behavior for me, but I tried a Firefox fork (LibreWolf) and it has the same issue. I don't experience this issue at any other website I visit.

Only certain areas of lichess.org cause this behavior, primarily playing a game against a human opponent. I tried progressively blocking media and script requests to narrow down offenders, but I always break site functionality before I can pinpoint anything.

I'm not so much looking for a solution (although that would be great) as I am troubleshooting advice. Is there any way to narrow down exactly what it is about this specific website that is causing the issue?

I have been unable to log into my email provider from their home page https://mailbox.org/en/ using Firefox. There is a progressive web app that "goes with" Firefox (if that is the right term) and that does not seem to work either. I get blank screens. I have succeeded in logging into mailbox.org in Microsoft Edge and in Brave. Can you please give me any clues as to what settings or whatever I need to configure in Firefox to be able to log into mailbox.org ?

My local newspaper has gone only digital, which I actually like. But, there is an option on the bottom of the reader that is available when using Edge and is not available when I use Firefox. A mouseOver on Edge displays "Print or clip". Yes, it's a snipping tool and/or print option. But it really right-sizes the snipped area perfectly for printing crossword puzzles. The Windows snipping tool (Windows 11) makes it too small so I need to go to Edge for only this one task. My first preference would be to get the function on the Firefox screen, and my second choice would be to figure out how to use the Windows snipping tool to print without leaving Firefox. Firefox 147.0.1 (64-bit) The reader if your allowed to open it: https://reader.sl.nj.com/full_page_image/the-star-ledger-2026-01-31-page-42/content.html There are Edge and Firefox screenshots in the attached file. The icon(s) of which I speak is the first of the four on the bottom right of the Edge screenshot ( the first screenshot).

Facebook videos in Firefox stop playing when clicking the Windows 11 Start button or opening Solitaire (after recent update)

This issue has just started after a Windows 11 update and restart. It has never happened before. I usually watch Facebook Reels while playing Solitaire at the same time — yes, I know, I don’t have a life.

This morning, after the update and restart, I opened Facebook and started watching a Reel as normal. As soon as I clicked the Windows Start button to open the list of programs, the video stopped. I then selected Solitaire, which opened to the taskbar. I restarted the video, clicked Solitaire to open the game fully, and the video stopped again. As soon as I minimize Solitaire, the video resumes playing.

I’ve tried all the suggestions I could find via Google, but nothing has worked so far. Note that this only affects videos playing directly on Facebook — videos playing in the Windows Media Player Legacy video player itself are not affected.

Any help would be greatly appreciated… and yes, as mentioned, I clearly don’t have a life 😅 Link to video showing what happens when I select Solitaire in the Taskbar. https://drive.google.com/file/d/1oKLIl3I4f9lfTZvbU-9pJ1gMbOU7h0zm/view?usp=sharing

Regards everyone.

More info... I run two monitors and it seem if I click on whatever I have open in the second monitor the FB video stops. So something has changed after I turned my computer on this morning and updated Windows. I even did a System Restore to a setting two days before this new update and nothing changed still have the problem.

I am trying to access my QNAP NAS configuration page within my home LAN from a newly installed Linux PC with Firefox 147.0.1. Firefox won't let me access the page, popping up an error page:

Warning: Potential Security Risk Ahead

Firefox detected a potential security threat and did not continue to nessy.fritz.box. If you visit this site, attackers could try to steal information like your passwords, emails, or credit card details.

I have verified that the claimed risk is nonexistant, but Firefox does not allow me to bypass the warning. There is no "Proceed anyway" or "Advanced..." button as claimed in various help articles.

How can I convince Firefox that I know what I am doing?

NB: The same page is accessible, also with Firefox 147.0.1, from a Windows PC.

Hi Guys this is a new issue and never happened before nor does it happen on any other browser I use If I happen to miss key when typing Firefox automatically opens a search and replace box window in the bottom left-hand corner and it is annoying the hell out of me. If I can't get this to stop I am going to have to change browsers, I have fat fingers and miss key often, so this happens many many many times a day. You can see what I am talking about in the image

Thank you for any help John

Hello,

I’m experiencing consistent crashes of the plugin widevinecdm.dll whenever I try to play DRM-protected content (for example, streaming platforms that use Widevine). Every time playback starts, Firefox crashes and the crash reports show errors related to widevinecdm.dll, specifically: EXCEPTION_STACK_BUFFER_OVERRUN FAST_FAIL_CONTROL_INVALID_RETURN_ADDRESS.

In such instances, Firefox keeps working normally. The tab doesn't even crash, it's just the player not responding and the message above telling me that the plugin has crashed. I have already sent multiple crash reports, the last one you can find it here on the Mozilla Crash Stats platform.

Does anyone know how this can be solved? I literally cannot use any subscription service anymore.

Windows 11: I have file download setting set to: "always ask where to save". I choose the location and folder when the save file box opens. The document is saved in the location I chose BUT it also saves to the desktop. How do I stop a duplicate download from saving to the desktop?

Thank you

Hello, I use Windows 11 on my PC in France. I lost all my Firefox bookmarks and browsing history some time ago. When I try to use Firefox I get the message : Firefox is not operational because one of the Firefox files is being used by another application. I have tried to get an explanation on firefox.fr but to no avail, their support page is far too complex. I can still browse with Frefox but no bookmarks, so it defeats the purpose... Please help if you can as I now have to resort to Google Chrome, wich is not as versatile and I would really like to be able to use Firefox again. Thanks. Raymond

Bonjour, Cela fait plusieurs message que je vous adresse mais je n'ai reçu aucune réponse ? Depuis votre dernière mise à jour de Firefox, Je n'ai plus aucun marque page ni Favori. J'ai essayé diverses méthodes en ligne mais rien n'y fait. Pouvez-vous m'aider. Je vous remercie de votre réponse, Cordialement, Patrick BASSELIN p.basselin@gmail.com

How can I or can I lock my desktop so that only tiles I select appear and do not change unless I change them? I have recommended stories turned off in settings and seemingly every site I visit and article I read shows up on my desktop to replace something I actually want on my desktop.