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OS version : Windows 10 Pro 21H2 Browser version : Firefox Developer Edition 126.0 Beta 8 (20240501022718) Platform : windows, Web

EVERYTHING especially

 * The time to receive the first HTTP response when connecting
 * the time to call up the various css elements that make up the screen
 * the time to call up the img elements on the screen
is too slow.

tooooooooo slow. I waited 36.6s until http response for every new URL open! Of course, I am using a lot of Firefox extensions, but there were no serious problems outside of YouTube, and the same problem occurred after removing the extension, and i also confirmed that the problem caused by web extensions on waterfall(on firefox profiler) was minor.

I can't even guess the cause of the problem, so unfortunately there seems to be no additional information that I can give you. I'll keep following up as long as I can. I will attach some pictures that might help you solve the problem. and you can also approach to my full-recorded firefox profiler data

Need help figuring out why Firefox has a memory leak after an extended use of Firefox browsing. Don't know if its the result of an extension having this issue, or if its a Firefox bug. I have also provided my troubleshooting information, and a link to my memory usage is listed below for download: https://1drv.ms/u/s!ArspaZQCMwZ-iLU_CckOfLkl9DlETQ?e=MuIqsO Thanks in advance!

I have used Firefox for many, many years and have always loved it. Recently, it stopped loading some websites. I have read and tried everything I have read and still can't fix the problem. I have to switch to Edge to load the sites. I am tearing my hair out trying to get this fixed, but I will have to use other browsers if this doesn't get cleared up. Some sites load and most don't, but there is no rhyme nor reason to what it loads and what it doesn't. I do not have a great deal of tech know-how and cannot seem to fix this according to my research. I get no "error" messages except that the page can't load. Please help. I would hate to have to learn another browser.

I have just done a clean install of the latest Thunderbird on Mac, and connected via IMAP to a pre-existing (although admittedly very large) mailbox.

My problem is that every single message apart from the ones received today shows a date that is wrong by nearly 600 years for both the Date and Received columns: e.g. from the year 1403 instead of the year 2024.

I am attaching two screenshots, the first shows a message received today that shows correctly (I am UTC+1, so 00:29 is correct). The second shows a message received an hour earlier where the date and received columns show 13/02/1403 at 23:30 instead of the correct value that appears in the Date header of the message of 02/05/2024 (all dates in DD/MM/YYYY because of my locale).

Does anybody know what is causing this? When I try connecting with other IMAP mail clients such as Outlook/Mac or K9/Andoid I do not see any problem with the displayed dates.

Firefox takes about 5 minutes to load every it launches, before working smoothly like it should. This problem occured first time yesterday morning, and I have no idea what could have caused it.

It happens :

• when I launch firefox normally (whatever the profile)
• when I launch it from the terminal (it provides no output at all)
• when I tell it to launch the Profile Manager (5 minutes to see the Profile Manager appear, then 5 more minutes to launch firefox using the selected profile)

It does not happen :

• when I click "New Window" inside an existing firefox process
• when I call `firefox --help` from the terminal

Here's what I've tried :

• First, I've seen pretty much every article from Mozilla Support, Reddit or SuperUser (writing this question is kind of my last resort)
• I've tried removing and then reinstalling Firefox from Flatpak, from the Fedora repos (using `sudo dnf install firefox`) and using the manual install via the archive (v125)
• I've tried downgrading firefox (when using the package manager install) from v125 to v124
• I've also tried the Firefox Developer Edition, same problem here
• I've tried using the "Refresh Firefox" feature and restarting in Troubleshoot Mode (both are also affected by the slow startup, which makes them particularly painful to execute)
• I've tried manually deleting the `~/.mozilla/` folder (= manually deleting my profiles)

When firefox launches, it does not freezes my OS and does not seem to use many system ressources : CPU usage is normal, RAM as well, and it does not seem to read many things from the disk as well (I've seen some threads where this was the issue).

And here is something interesting that I discovered :

• loading (including refreshing) `about:profiles` is also slow and this time freezes firefox (OS reports it as not responding, I can't switch tabs and I can't see my mouse). Other about pages seem to work fine (although I did not try them all)

Thanks !

PS : Even if I think it has nothing to do with the issue, I prefer to mention it here : I was messing with virtual machines yesterday when the issue occured for the first time. My disk got full at some point and I don't know but it might have messed with firefox. At this stage, I had not deleted any files that could relate somehow to Firefox, that's why I doubt it would have caused anything harmful to Firefox. (instead, I mounted an empty partition from my disk to get some space)

Windows 10 Home 22H2 Firefox 125.0.3

For quite awhile I have had an intermittent problem when watching YouTube videos. To watch a video I right click on it and select "open link in new window". If I just click on the video to watch it, the main page may reload when I click on the back arrow and some of the videos I was interested in are no longer displayed. Sometimes my touchpad doesn't recognize the right click and opens the video in the current window. After it starts playing, if I click the back arrow, the video returns to the previous page (which may be reloaded), and sometimes the audio from the video keeps playing, so I have audio for a video that is no longer visible. When this happens, if I click on another video, the audio from both are played. Today I had the same thing happen when I was streaming a TV program from the Spectrum website.

1. If I click on a YouTube video from the main page, should the main page be rebuilt when I click on the back arrow? 2. How do I resolve the audio continuing to play problem? i don't know if this is a Firefox problem but I have no idea where to start to fix it.

After upgrading to fedora 40, firefox just takes ages to boot up, even when it's running if I want to open a new window it still takes ages to run. I have tried uninstalling it and deleting it's data but with no luck. The issue still presists.

Hello, since the latest version of Firefox, as always, it breaks now if I want to enter instantgaming or it does not enter no matter how much I click on enter or in kinguin.net, when it asks me for the recapcha, it stays in an infinite loop and does not show the images. .

I have done safe mode and installed firefox from 0 and nothing, it is tedious that at this point a browser that has been having this type of problems for years because in opera, edge they do not give me these errors, it is tiring to always have to have a browser that fails due to anything.

I look forward to your help, thank you

I have tried all fixes suggested by others reporting similar problems with previous versions, but this was noticeable for me yesterday afternoon right after some downtime and the latest version (for me) of Firefox was installed. Every time I try to use a site requiring recaptcha, the wheel spins and I get no choice to log in. I've cleared cookies and my cache, refreshed Firefox, etc. Nothing works.

So running thunderbird 115.10.1 (64-bit) and more and more issues:

• the app keeps getting non-responsive for long period of time, to fix this I have to force quit the app.
• at times when composing an email the app freezes where no typing occurs for seconds or typing is very slow or after typing awhile the text suddenly appears.

Seems to be happening more and more trying to figure out how it can return back to it's rockstar state when it was <99 version.

any help would be appreciated.

I see my original question is now archived at https://support.mozilla.org/en-US/questions/1380948#question-reply I never closed it because I didn't know if my last process could really fix the issue. It didn't, not always. Over the years, there have been times when the issue would still pop up, but not as often as before (2022 and earlier).

I have a feeling that during an issue, FF is having difficulty setting up shop after starting up. Consequently, it is spending more time before it could become prepared to connect to the Net. I've come up with another "solution," which is deleting (or moving out) xulstore.json in the profile folder after exiting or before starting FF. You can create a batch command or script to execute the process.

So far, FF is connecting immediately after startup.

Hi I am having problems with Thunderbird, i’m not sure if it’s to do with a windows 11 update or something else. Thunderbird is not responding also at the start of the ‘not responding’ emails from one of my accounts disappeared and then gradually started to reappear but didn’t get up to date and now just not responding st all. I have tried various things to resolve this, uninstalling and reinstalling Thunderbird, doing this and opening my pc in safe mode, doing this and opening Thunderbird in safe mode. Deleting and reinstalling the latest windows 11 update, reinstalling the latest Thunderbird update. I don’t know what to try next? I read somewhere to delete your profile, after saving it, and getting a new profile but no idea how to do this. Any help appreciated.

When I try to type on input fields on certain websites, many keystrokes are not registered by Firefox.

Mi device is a Redmi Note 12 Pro 5G with Android 14 (HyperOS 1.0.3.0.UMOEUXM), Firefox 125.3.0 and Gboard 13.4.07.5593884O4, but this issue already happened back in the MiUI age and with previous versions of Firefox.

See link to a recording of the issue where I typed firefox and got "rf". https://ufile.io/ii9gu7a3

It is probably related to trying to type while part of the website (ads) is still being loaded.

Since upgrading to the last version, 125.0.3 I'm getting tab crashes. Is there any way to go to a previous version? I have not had any issues with the websites I'm visiting until this new version of Firefox.

I'm about to give up on Firefox.

While Firefox is the browser of my choice, its bugs are a constant source of frustration. When navigating on YouTube, I'll suddenly have it stop loading properly and just load more or less blank. You can see this in the image attached. To rectify this problem, I'll need to quit Firefox completely and run a cleaner (WiseCleaner, in my instance) so that it loads correctly again. This happens across several computers I have.

As I game, I usually dual-monitor to watch things on YouTube or Twitch simultaneously. When watching Twitch with Firefox, I noticed that the video would stutter or freeze while the audio continued. I checked Task Manager and found CPU usage to be extremely high. I cannot recreate this problem now as my second monitor is in the repair shop.

Firefox is one of the only few alternatives to a Chromium-based browser. As I don't like Google policies on ad-blockers, tracking, and so on, I'd like to stay away from anything Chromium-based. But it's becoming increasingly difficult to do so, as the user experience in Firefox is so bad, especially when using YouTube, one of my main browsing activities.

I tried turning off hardware acceleration, but this did nothing. I've reinstalled Firefox, but as this happens across several unconnected browsers, I cannot think this is a local problem. What to do?

It all started about 3 days ago. I was having problems accessing my att.net email account on both my iMac running Thunderbird 115.10.1 and on my iPhone running iOS 17.4.1. I changed login password and was able to get the mail on iPhone, but not on the computer running Thunderbird. I got the settings information for both POP3 and IMAP from att. I first tried to go into Thunderbird and was able to find the email protocol settings and they were correct for POP3, but still not retrieve email. The error message I last received is, "Sending of password for user ******@att.net did not succeed. Mail Server inbound.att.net responded:[SYS/TEMP] Server error - Please try again later.

I am using Firefox 125 in Windows 11. And this just happens recently.

Sometimes, quite frequently, when I click the addressbar wanting to input or select a new address. The Firefox UI freezes (before the dropdown list of addresses is shown). The video/audio/other effects are still working, and from task manager, it does not cost more CPU/mem than usual. But it does not response to key press or mouse action. All I can do (that I know of) is killing the processes. The problem does not seem related to "current" webpage I am browsing. And I have not installed new addons for a few months.

Any idea what should I look into?