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Hello everyone,

yesterday I got quite a scare. While Firefox was open, a new tab briefly appeared showing the page about:processes, and immediately afterwards the browser closed itself on its own.

At the same time, Chrome was open in the background. When I clicked on Chrome, a prompt appeared asking whether I wanted to allow changes to be made to the system (the typical UAC prompt). However, I’m not entirely sure if this was actually triggered by Chrome or possibly by another application.

I clicked “No” on the UAC prompt and immediately unplugged my keyboard. I recently started using an ASUS ROG Falcata, which is connected via USB.

After that, I ran a virus scan with Windows Defender — it didn’t find anything. I also ran AdwCleaner, which also came up clean.

At first, I suspected the ASUS ROG Falcata (I’ve only been using it for a few days), since it’s almost like a small computer itself and can execute macros, patterns, etc. I was worried about a possible firmware bug or something worse. At the moment, I’m honestly hesitant to plug it back in and am using an old Dell keyboard instead.

Importantly, I wasn’t pressing any keys at the time of the incident.

Now I’m quite unsure what could have caused this.

Is there any way to trace this in Firefox (e.g., via logs)?

And is there any (event) log where I could check what triggered the UAC prompt?

One more thing I noticed: I shut down the PC afterward and turned it back on later that evening. Everything booted normally and is still running fine today. However, Firefox updated itself yesterday from version 148.2 to 149. Maybe that was somehow related (though there’s no indication in the Firefox update history that anything failed or similar).

I use Linux Mint and I have been experiencing numerous system crashes involving Firefox which requires a cold boot. What is the problem? How can I debug this? Are you getting crash reports?’

This happens several times a week. It has happened continuously tonight since installing the latest update via the Software Manager.

The program causes a total freeze of the OS. All other running programs and all input sources. I have no choice but to shut down via the power button on the tower.

Mint generates crash reports but I have no way to determine if they are being sent to Mozilla.

Firefox for Linux does not provide a troubleshooting system like it does on Windows. Neither does Mint.

I studied Computer Science in the 80s when Firefox was known as Navigator. I learned C and the Unix OS, but since then I became a psychologist, and don't remember too much of the Com Sci stuff I learned and I don't think Mint allows user modifications anyway.

What can be done to fix this? I don't have the Benjamins to buy a new Windows to replace the Linux, nor do I want to.

A few moments after opening Firefox, (on an Acer Spin 5 that is up to date) Il loses connection along with all other Firefox open tabs, all on its own. When retrying on Firefox, a message appears saying that it is unable to retrieve the prior session. What is causing this and how can it be fixed?

When I open Firefox for the first time after logging in to my macbook, after a few minutes, a second Firefox icon appears in the dock at the bottom of the screen. Why is this happening (only started a few days ago)? And how do I stop it?

A few weeks ago, my Thunderbird went very, very slow. It has from time to time crashed. Now this happens whenever I start a new email. If I downloaded Firefox, would that help?

I have followed all the other recommendations with, no luck. I am on Windows 11 and use Eset virus software. Thunderbird is not listed as running it Task Manager, and there is no Profile.lock (think that was what it was called) in the profile directory, and I have deleted the existing profiles and recreated it. I have uninstalled and reinstall Thunderbird, and I have rebooted my computer. I am frustrated and concerned I will loose saved emails and my address book! Help.

After updating to 150 (any subversion), FF crashes on almost start - I can load a page but loading another page or a video in the page will stop loading after a while and crash within 5-10sec. No about:crashes generated. No crash if I only browse the page that's opened (except if I load extra content like videos). FF remembers if I navigate to another page before the crash, it'll open the navigated-to tab (provided it has been long enough, small pages load, big pages don't). It really looks like after loading a fixed amount of data it just stops loading and crashes, taking the full browser down with it. Note that there is likely 500+ tabs opened (even though it's never been a problem), cache was cleared and extensions deactivated.

For the first time in many many years, the beta's unstable (brillant track record for a beta)!

Browser shuts down within 10 -20 seconds of going to a website, and I get a crash report which I have clicked to forwarded each time to Mozilla.

Also have a new error message at the top of the browser that says: "The security sandbox is disabled. Your configuration is unsupported and less secure." (image attached)

Not sure if that is related or not.

Dragging and Dropping folders to upload on dropbox.com have worked flawlessly before Firefox 150.0

Now in Firefox 150.0, dragging and dropping a folder will result in the tab crash.

See attached image of the notice.

Note: This tab crash does not produce a crash report as nothing is shown for this tab crash on "about:crashes"

https://crash-stats.mozilla.org/report/index/d8249736-7e22-444b-8710-80b0d0260422 this happens when i search on google go youtube chatgpt any page on the web.

why im cant set www.http//firefox for home page.??why we have to re store evetime when we washing a movie,,,then they automatic to ture off ?are they have any shearch with out of the google ?

As the subject says, Thunderbird 18.0 for Android keeps crashing silently. There doesn't appear to be any specific trigger; periodically, the app just disappears off screen. Since it doesn't seem to be related to a specific user action, I wonder whether a background process (such as server syncing) might be causing it. My device is a Samsung Tab A-9.

Been having tab crashes every couple of minutes - doesn't matter what the site is, the tab will crash out and I'll have to refresh. I have a laptop that is synced that I also use that doesn't have this issues - it's isolated to the PC.

Tried sfc, DISM, hardware and memory checks - all come back good. I'm inclined to believe it could be something on the operating system and not hardware, but I also recently reinstalled Windows. I had another thought that it could be something with JavaScript (seemed like a common theme in the error reports, but I'm not 100% what I'm looking at or for).

On a samsung a54 running android 16 and thunderbird 18.0, thunderbird crashes on trying to open a specific email from theglobesailer.com. it does contain quite a lot of images? Interestingly, it opens ok on my tablet running 17.0. I can't see anywhere obvious to submit a bug report, so maybe someone on here could pass it on, please?

why does my fire fox keep crashing the screen goes black i get tab just crashed already updated and cleaned my ram and did everything i could think of and still crashing am still crashing on troubleshooting mode

I am experiencing significant stability issues with Firefox. When I use YouTube, the entire browser frequently hangs (becomes unresponsive) and eventually crashes. This does not happen on all websites, but it is consistent when playing video content on YouTube.

• Symptoms: The browser "stacks" or freezes completely; I cannot click tabs or menus until the browser finally closes/crashes.

• Extensions: I am currently using extensions like SponsorBlock, uBlock origin. I am unsure if this is the cause, but the issue persists during video playback.

• Hardware: I am running this on a laptop with an 16gb 4800mhz RAM, i7 12th Gen processor and an RTX 3070 GPU.

1. Is there a known compatibility issue between current Firefox builds and SponsorBlock or similar video-modifying extensions?

1. Could this be related to hardware acceleration settings with my NVIDIA GPU?

1. What steps should I take to provide crash logs to help identify the root cause?

I am running Fedora 42 KDE spin ("plasma"). The "Discover Software Center" app offers Thunderbird as both a regular and a flatpak install, and I somewhat arbitrarily chose flatpak.

I am dealing with several legacy email accounts that have 20 years of messages, so I need to control where the profile was created, so immediately after installing I ran with -P to create a profile and specified a path name of /lore/jeff/thunderbird. /lore is the mountpoint of /dev/sda2 and it is in my /etc/fstab. /lore/jeff previously existed because that's where I put my Dropbox folder.

Every time I shut down TB and restart it later it always fails because lock and .parentlock are never deleted. Until now, I just dealt with it by deleting the files in bash, but today I wanted to make sure that TB always starts offline and decided that user.js would be the absolute safest way to guarantee that, so I pulled up profiles.ini to get a list of all profile paths to make sure that I put a copy of user.js in each and every one whether it's in use or not. What I discovered is that the profile I created does NOT have a Path of /lore/jeff/thunderbird but instead /run/user/1000/doc/e1a4ab74/thunderbird and not only that but at the very bottom of the file are these three lines [InstallBD520B11F73A6B64] Default=/run/user/1000/doc/e1a4ab74/thunderbird Locked=1

The interesting thing is that when I put user.js into the /run/user... path and then looked at /lore/jeff/thunderbird to check on lock and .parentlock, I see that there is magically a copy of user.js there. I'm not exactly sure what is going on because when I do `ls -ldi` on the two files, their inode numbers are vastly different. I don't know enough about how flatpak operates internally, but my gut tells me it has something to do with it, and my question that I'm finally getting around to asking is if I edit the profiles.ini file to use /lore/jeff/thunderbird in an attempt to get TB to correctly clean up the lock files, is that going to cause a problem because of whatever flatpak is doing? And should I complain to flatpak about it?

Thanks for reading :-)