Firefox Community Forum

Almost every time I open up Firefox it has a little pop-up under the tool bar asking "Open Firefox every time you restart your computer?", and every time I select "Not now", which I guess is intended as only a temporary answer. How can I permanently say "No" and keep this from popping up constantly?

As long as my computer doesn't go to sleep Im fine. If it does, when i open firefox, i must refresh to be able to find my bookmarks and passwords. What am I doing wrong? Thanks in advance! Micha

When I wake up Firefox from sleep overnight, it is unresponsive until I force quit. I am on v147.0.4 on my M4 Mac Mini. It doesn't happen in shorter sleep periods. I can click something in it and then when I switch to another app, it responds. But the browser on normal interactions won't respond at all.

After the most recent upgrades (both MacOS to 26.4 beta and Firefox 147.0.4), Firefox is giving me this message: Hmm. We’re having trouble finding that site. Any suggestions?

I’ve encountered a problem with Firefox that it fills up the RAM memory to the brim (12Gb) and especially when you’re on Facebook, it doesn’t empty the RAM memory but the data remains, you have to close Firefox and lose your web page, it just fills up, Why, should it be like this, very annoying!!!? :flushed_face: //A-B/Sweden

I've just switched to Fedora 43 KDE plasma from Windows. On Windows, everything was totally find with videos on Firefox. After migration I kept having an error message "The media playback was aborted due to a corruption problem or because the media used features your browser did not support." not only on one site (else it could have been the site). After searching for solution here and on the Net, I found out that it's not related to Fedora but to Firefox when using Radeon RX7700XT on Linux (idem with several distros). And indeed, when installing other browser and testing them there was no problem, even with LibreWolf. So can you please take action as I like Firefox and I would not like to have to move everything to an other browser. And it seems that this problem has been around for at least two years ... which you should be ashamed of.

if I had 30 bookmarks, there was no problem to sort all by name, if I´ve had 40 bookmarks I must sort it 3 times but then it works. But now I have more than 50 bookmarks and I testet it every update but it dosen´t work, why ?

I have my browser.sessionstore.max_windows_undo in about:config set to 60 – it's been like this and working fine for several months.

It's set to this high number because I use an assistive technology which creates a fresh pop-up every time I deploy it, and Firefox treats it as a browser window closure when I close the pop-up. Consequently, I can easily rattle through well over 25 window closures in a day.

It's not necessarily that each window contains dozens of tabs and copious data, but nevertheless Firefox still treats it as a window 'within the meaning of the act'!

I just went to reopen one closed window from a couple days ago which did contain many tabs (partly why I closed it in the first place), only to find that the 'recently-closed windows' context menu is now only showing 20 windows (18 of which are the aforementioned pop-up assistive technology windows)

The really vital window that I want to reopen is not showing.

I've double checked in about: config and the browser.sessionstore.max_windows_undo is still set to 60 windows; nothing has been altered or reset.

I updated Firefox to 147.0.4 yesterday evening, but the problem existed before I updated Firefox, and is still in evidence since updating.

Two questions:

1) Why is the Recently Closed Windows context menu not showing the full number of windows it has been successfully doing with no problem now for months? I used to have to scroll down to access the full extent of the 60, but they were always there.

2) Why has it arbitrarily changed to 25 windows?

3) [I lied – Our chief weapons etc...] Is there a way that – given about:config still implies that the most recent 60 windows are retrievable – that I can access beyond the 25 windows limit that are currently showing as reopenable?

Thanks very much

(And yes, I already have things like OneTab and Tab Session Manager add-ons, but disabled those just before closing the important window, because I was trying to locate which add-on was draining the CPU. I assumed my 'recently-closed windows' buffer of 60 would suffice while I disabled the add-ons.)

When Firefox updated I only created a default profile and could not or did not import bookmarks. They seem lost now. I was offered to import from other browsers like Edge but did not see any way to import from my previous Firefox version. I am unable to find any automatic backups in bookmarkbackups folder.

While watching netflix, I randomly get error code F7361-1253 which prevents the video from playing. Can happen at any random time while watching. I have had firefox for years and have only got this issue in the past few months. It does not happen on other browsers like chrome.

I have tried disabling all extensions and troubleshoot mode, doesn't fix it. I didn't change any firefox settings since this started happening. DRM is enabled, widevine is the latest version, so is firefox, fully updated. I am using Windows 11 Home, 10.0.22631 Build 22631

These are the warnings I got in the console as soon as the netflix error pops up:

Cannot play media. No decoders for requested formats: audio/mp4; codecs="mp4a.40.42" 81036307

Media resource blob:https://www.netflix.com/6bc68eac-89ce-4b21-afcd-f78b0a3908ce could not be decoded. 81036307

This error message will be blank when privacy.resistFingerprinting = true. If it is really necessary, please add it to the whitelist in MediaError::GetMessage: ipc::IPCResult __cdecl mozilla::gmp::ChromiumCDMParent::RecvDecodeFailed(const uint32_t &): ChromiumCDMParent::RecvDecodeFailed with status kDecodeError (5) cadmium-playercore-6.0055.308.911.js:1:568518 WEBGL_debug_renderer_info is deprecated in Firefox and will be removed. Please use RENDERER. cadmium-playercore-6.0055.308.911.js:1:372306

Media resource blob:https://www.netflix.com/6bc68eac-89ce-4b21-afcd-f78b0a3908ce could not be decoded, error: Error Code: NS_ERROR_DOM_MEDIA_FATAL_ERR (0x806e0005) Details: ipc::IPCResult __cdecl mozilla::gmp::ChromiumCDMParent::RecvDecodeFailed(const uint32_t &): ChromiumCDMParent::RecvDecodeFailed with status kDecodeError (5)

I have ffmpeg on my system and haven't touched it in a while.

This appears to be a new "feature" that is absolutely insanely stupid.

There are websites that use a phone number as a user ID and now, instead of that number being remembered by Firefox as a user ID, Firefox now inserts a list of EVERY possible phone number you've ever typed, for you to chose from. The irony in my case being that the phone number in question that was being used as a user ID, is NOT in the list.....

Anyone know how to turn it off? Thanks - Brett