Firefox Support Forum

I work for the Center for Internet Security (CIS) and my team develops the CIS Benchmarks for securely configuring a wide variety of technologies. Specifically, we make a Firefox Benchmark with recommendation on how to more securely configure Firefox. We would like to get some "Firefox People" involved in helping us update this Benchmark. Some power users and/or some Mozilla folks would be wonderful.

All contributors are listed in the resulting document and the resulting pdfs are freely available on our public website ([CIS Website] https://www.cisecurity.org/cis-benchmarks).

If you are interested please reply and let me know how to contact you.

Phil

I am attempting to copy values from one google sheet to another and am unable to do so effectively as whenever I press crtl +shift + c I open the the developer tools. All my efforts on looking for a solution have lead me to unsupported extensions so I'm stuck wondering what to do.

TL;DR: Make sure you're on the latest... turn Sync off on the computer that isn't showing the remote tabs, then turn Sync back on.

Details:

Three computers (Windows), a phone, and a tablet. Firefox 124.0.1.

Sync is enabled and generally seems to be working fine. But I just noticed, on one computer, that when I went to Firefox View, and clicked on "Tabs from Other Devices", that it was showing nothing, other than the, "Log into your Firefox Profile", which I was already logged in... so that was messed up.

Did a number of things, like checking the other computer, manually syncing from the other computer, coming back to this one, and telling it to manually sync. It also seemed to be stuck in syncing (a grayed button that said "Syncing...")

I looked, and there was an update available to 124.0.2, so I used this opportunity to upgrade.

When I came back in, I still didn't have the remote tabs showing up, so I turned off "Sync" entirely, but didn't log out of my Firefox account, and then turned it back on.

Now I'm seeing the remote tabs.

That's how I fixed it. I hope it helps. I see others having Sync problems, and getting terrible suggestions that are not helpful. In this case it's the simple thing that fixed it for me. Turn it off and turn it on again. If that doesn't work, unplug the computer from the wall and plug it into another outlet.  ;-) ( That's a joke for those of you with a sense of humor. )

I have Firefox on 3 devices, I deleted several passwords from 1 device expecting this change to sync to the other 2 devices. Instead for several days the 2 devices showed the original number of passwords whilst the device I made the changes on showed the new amount. Now that device appears to have resynced the passwords I deleted. Am I supposed to delete them on each device?

I have the latest version of FF on all devices.

I am not sure when exactly problem started but for few months I have problem with automatic update of firefox. It properly detects update and downloads it but when I click to restart browser and apply update (this should close browser and display update install bar) nothing happens - browser simply closes. When I launch it again and go into "about firefox" again I see spinning circle next to "installing update". Of course this update never installs. When I close it for 2nd time and go into "about firefox" it goes back to "update ready to install, click to restart" - and again, when I click it browser simply closes without restarting and installing update. I tried removing my profile, using safe mode, disabling antivirus. Issue seems to be related to firefox itself. I also tried removing mozilla maintenance service but it did not help. Does anyone have any idea what could be causing this? For now only way for me to update firefox is manually download full installer from website and then it installs latest version without any problems - until next month comes and I have to update it again.

Whenever I attempt to watch something on any streaming service, I get an error message from the streaming service and a note from Firefox saying "The WidevineCdm plugin has crashed." I have tried to solve this problem a number of ways, but have unable to find a solution.

My best guess is the problem is due to the most recent WidevineCdm update, as in the plugins settings the most recent update for the plugin was on 10/21/23, which is shortly before I first noticed the problem. I did test out various streaming platforms on other computer browsers (Chrome and Microsoft Edge) — they gave the same website errors as I got on Firefox, but those browsers did not indicate the cause or suggest which plugin failed. I additionally tested out desktop apps for some of the streaming platforms; they work fine without any issues, but unfortunately the main streaming platform I use doesn't have a desktop app and only works in browser.

My computer is a Lenovo Yoga 9i, it's running Windows 11, and everything is up-to-date.

The methods I have tried to fix this issue with, to no avail: - submitted crash reports - toggling the "play DRM restricted content" options in Firefox, and toggling whether or not the WidevineCdm was activated, closing the browser between each toggle of options - clearing Firefox's cache - running Firefox in troubleshooting mode to make sure it wasn't a different extension interfering with it - tried running Firefox in compatibility mode - tried to find support from the people who made WidevineCdm, but apparently they don't do end-user support - deleting the WidevineCdm manually from the program files for Firefox and Chrome (since Firefox says the plugin is from Google), and then reinstalling it via the chrome components page. This briefly lead to the message on the plugin page that WidevinceCdm would "begin installing shortly." It seemed frozen like that for a good while, but then I tried clicking the "check for updates" and that message disappeared, and it went back to crashing when I tried using a streaming service. - uninstalling both Chrome and Firefox, restarting the computer, then reinstalling both browsers

As far as I can tell, the plugin comes automatically installed in the browser, and there isn't an alternate plugin for decrypting DRM-restricted content. If there's a way to set the WidevineCdm to a previous version before the update that's crashing it, I haven't found it, but I am no expert in computers or coding, and my guess about it being caused by the recent update could be wrong too.

I'm at my wit's end here, any help fixing this problem is greatly appreciated.

This is a rebuilt PC after a hard drive died, Windows 10 Pro N version 22H2. and YE

I am trying to access video content on cbc.ca or Amazon.ca and receive an error message that "no compatible source was found for this media" - Amazon or on cbc.ca "Oops...None of the given sources can be played".

Prior to updating Firefox to version 123.0.1, both played video on these sites without an issue.

I have uninstalled and reinstalled FF and the issue persists. I can play the video from these sites with Chrome or Edge without a problem.

I have installed Java and have tried all of the help tips without success:

I have followed and installed recommendations from : https://support.mozilla.org/en-US/kb/fix-video-audio-problems-firefox-windows however the latest Media Feature Pack for windows is from 2019 and is no longer applicable to the 22H2 version. https://www.microsoft.com/en-us/software-download/mediafeaturepack. Windows store does not offer the pack.

The changes suggested by https://support.mozilla.org/en-US/kb/block-autoplay have been applied and no change

I am not running malware bytes or a VPN.

I have cleared my cache, and browsing history, rebooted = no change.

I have no add-ons, extensions or themes installed.

I prefer to use FF, but require that I can view videos from many sites.

I am using the latest version of firefox. Windows 10. I'm writing a school project with assistance from ChatGPT. When I ask it for a link, it provides it. While it is "typing", I can see the link, but when it finishes "typing", the link becomes a blue word "Link", with the web address gone. I can not click on it to open the website, like I can in Mirosoft office. There is no way to access the website. I tried to use troubleshooting mode with all extensions disabled - it didn't help. ChatGPT claims, that it's the browser issue. How can I access these links?

So I have a following problem

FF 124.0.1 Windows 10 N edition Installed media feature pack

When trying to play twitch video it shows error 4000 and when trying to play stream from youtube it shows that your browser can't play this video.

Problem is that FF was able to do it like 6 moths-year ago (not really watching stream videos)

was trying to reinstal media feature pack, firefox, chcecknig nighgtly build but without sucess and have no clue what can do more

When I try to play a video on Firefox desktop, it takes it a long time to load. Once it has loaded, whenever I pause it for more than a few seconds, or if I try to skip around the video (either by clicking around in the loaded section of the progress bar or using +/- seconds buttons), the video begins buffering again before the video resumes. This makes it extremely difficult and frustrating to watch anything that requires me to pause, rewind, or fast forward. I've noticed this issue affect multiple video viewing sites, such as YouTube, Vimeo, and Netflix. My roommate also uses Firefox, but doesn't have this issue, so I know it's not a problem with my internet. I thought it might be a problem with my computer, but I tried to replicate the issue in Chrome and everything worked fine there. The issue has persisted almost a week. I have:

• Rebooted my computer several times
• Deleted my history/cache
• Disabled my extensions
• Turned off Java scripts in firefox (this disabled my ability to load sites like YouTube completely, so I turned it back on)
• Updated my computer
• Updated my graphics drivers
• Refreshed firefox
• Uninstalled and reinstalled firefox (and rebooted my computer)
• Uninstalled and reinstalled firefox AND deleted all the data it stored on my computer (and rebooted my computer)

I am currently using version 123.0.1 of Firefox. My OS is Windows 10 22H2.

I am facing issue while downloading files in Firefox Private Browsing. Whenever I download my PDF files, as soon as I close the browser window, the files also get deleted automatically. What should I do to rectify this issue.

I'm having this exact problem from here , but browser.taskbar.lists.tasks.enabled has always been set to true. Toggling it does nothing in itself in between restarting my machine. I am certain it's not a jump menu thing because this isn't about shortcuts (and besides the point, enabling the jump shortcuts from my OS side of things does not display it either way). I just want the stuff that the user in the above link listed.

Coincidentally, I had this exact problem a short while before, and I think it may have had to do with an update, because I remember Firefox updating at least twice fairly recently and it is in this time I've noticed this issue. The first time around it resolved itself, but this time it has not and I do not know the cause.

Unpinning/pinning the icon on the task bar does not resolve this either. It seems none of the conventional solutions in the past work, so unless I am missing something, something broke.

Fiz a configuração para sempre perguntar onde salvar arquivos nas configurações, em aplicativos em "Tipo de Conteúdo" selecionei o PDF para "sempre perguntar". Acontece que quando seleciono para abrir o documento pelo adobe ou pelo firefox, ele está está salvando na pasta Downloads automaticamente, e eu não quero que salve. O meu Firefox está atualizado na versão 124.0.1. Windows 10 Pro 22H2. Meu Firefox está salvando os arquivos PDF na pasta Download mesmo eu não querendo salva-los. só quero visualizar. Enviei imagem da minha configuração.

Obrigada

Please help.

I have always loved Firefox. I started using it because it did not constrict the user to the limits of the narrow minded Microsoft Explorer (Edge). But, this latest update reminds me of what I came to Firefox for. I hope Firefox is not going to become the same way. This latest update (124.0.1) just didn't care about my bookmarks or extensions or anything. It just installed a new version and left it at that. I had several tabs open. Gone. I had several bookmarks. Gone. All extensions. Gone.

For a long time Firefox just updated and left all of those things in tact. What happened?? More importantly, does anyone know how to get these things back?

I would really appreciate your help.

Thank you, Luke

The solution given by cor-el works very well.

Thanks cor-el ! I needed that.

But you won't know it until you access more unique folders than you already have in the list.

For instance, when you access the 8th folder that is different it will be sticky, when you access a 9th that is different it will be sticky. Kind of like a "most recently used" list. You won't see the extras until they happen.

Solution given by Cor-el: There is a pref on the about:config page that defaults to 7 to set the number of entries to show in this list of recently used folders.

- about:config => browser.bookmarks.editDialog.maxRecentFolders = 7
- https://support.mozilla.org/en-US/kb/about-config-editor-firefox 

Original post at: https://support.mozilla.org/en-US/questions/1410392#answer-1574837

Thanks again,

Mike.

When I try to detach a tab, so that it's a new window, by dragging the tab downward so it isn't on the tab bar. After I let go a new window is created for that tab that I dragged, however it also maximizes the window, which disorients my work flow. Is there any way I can detach a tab into a new window and not have it maximized automatically?