Firefox Support Forum

Windows restarted to update and all my 100s of tabs are lost (setting me back days of work!)... Firefox is set to always reopen previous tabs, but it didn't work. Recently closed tabs/windows are blank. The Restore Session page - about:sessionrestore - doesn't restore and lists no previous windows/tabs. I went into my sessionstore-backups folder and grabbed a previous.jsonlz4 that has some data but am not sure what to do with it.

Please help! This is a devastating loss of information, as I use my tabs as a to-do list and had many in-progress projects with resources that I cannot all recover just through history.

I have the strangest problem. If Firefox is closed and I do a speedtest in another browser, download a file, or do other internet activity I'm getting about 200-250Mbps d/l and 100Mbps upload. As soon as I open Firefox, whether I load a page or not, the upload speed stays the same, however the download speed drops to about 25-50 Mbps. This only happens on one PC, the upload isn't affected, and resolves itself as soon as Firefox is closed. Here's what I have done without any change in this behaviour;

• Rebooted
• ipconfig /release /renew /flushdns
• Removed and reinstalled the network adapter
• Enabled, disabled windows auto tuning and tested (slower disabled)
• Updated Windows
• Refreshed Firefox
• Uninstalled Firefox, deleted remaining folders from Appdata (Local, Low, Roaming) as well as the program file directories and "Mozilla" registry entries. Restarted and reinstalled. Issue immediately resumed when Firefox was open.

Also when connected to a VPN Firefox download speed increases to about 60Mbps and is consistent across other software. If I split tunnel another browser outside the VPN, it is still stuck at 60Mbps. If I close Firefox the speed increases.

This makes absolutely no sense to me, so I'm hoping someone can shed some light on this - but it does seem to be something Firefox is doing.

Thanks for any help anyone can provide.

Similar to the issue described in this thread (https://support.mozilla.org/bm/questions/1240674), I am unable to open Firefox - it simply refuses to open. I've tried multiple times, the option key, and re-installing. Nothing seems to work, which suggests something about my user settings is the issue, but a) I am not keen on deleting this if possible and b) I won't delete my user settings unless that is necessary. Like the attached thread, I am happy to attach crash reports, but without the ability to even open Firefox properly it's not obvious how I do this - force-quitting it just sends a report to Apple.

Any help much appreciated - I'd quite like Firefox working again.

My laptop is a MacBook Pro 13 2020 (Intel) running macOS Monterey (12.7.4). I installed the version of Firefox available for download as of writing (v127.0 based on Finder).

For a while now, I've been having recurring issues with Firefox desktop freezing and becoming totally unresponsive. If there's any pattern to what causes it, I haven't been able to notice it; sometimes it happens as soon as I open the browser, sometimes it happens after several hours, sometimes it happens twice in ten minutes, sometimes it happens twice in a few hours (however, I can count the number of days it's happened less than twice in one day in the past few weeks on the fingers of one hand). When the browser freezes, it becomes totally unresponsive - it doesn't fade or display "Not Responding", and Task Manager shows nothing abnormal, but it doesn't accept any input at all, any video or other animated material that may have been displaying freezes, and it can only be "fixed" by force quitting from the task manager and reopening. This is exclusively a firefox issue; other programs open at the same time as the browser freezes are not affected.

The only real lead I have as to what could be going on is that sometimes, things don't freeze all at once, but in a cascading effect. For example, tabs, bookmarks, etc. might not highlight when moused over, but still accept the clicks, or selecting another tab might causes the address bar to display the URL of the selected tab, but the screen displayed in the window will not change. Once these cascading changes start, they generally progress to total freeze before I have a chance to do much with that information (only a few seconds), but it's unusual enough behavior to be worth noticing.

Things I've already tried that haven't fixed the issue:

• Reducing the number of tabs used and otherwise reducing Firefox's system resource usage has not impacted the problem in any way.
• Running in Troubleshoot Mode has not had a consistent effect on the problem (the most recent time I did, the browser ran stably for longer than I could stand to use the internet without my ad blocker, but this is only one data point in an already inconsistent spread; prior instances of the problem have occurred in Troubleshoot Mode)
• Disabling hardware acceleration has not fixed the issue.
• The issue has persisted through multiple refreshes and at least one full uninstall and clean reinstall.
• The issue persisted after creating and switching to a new profile multiple times.
• The issue persisted after renaming places.sqlite
• The issue persisted after clearing cache and cookies multiple times.
• The issue persisted after clearing downloads and history.
• And very likely some other stuff that I'm forgetting, I've been trying to fix this on my own for a while now.

On many online forms, Firefox substitutes a dash " - " when I type a "9" . I cannot figure out why or how to override this. I am runnning Mac OS 10.13.6 (high Sierra)

I've been using Rightmove Professional on Firefox for ten years plus but now suddenly it's not working correctly as the viewing windows no longer slide. Rightmove say it's due to an update by Firefox and advise to switch to Chrome but I really don't want to - will this issue be fixed? Thanks

I get the following two error messages when I click on Foxfire. Couldn't load XPCOM; and Entry Point not found; followed by this:  ?Nan@Decimal@blink@@SA?AV12@XZ could not be located in the dynamic link library...

I tried to uninstall the program, but got the same two messages and it would not let me. I downloaded a new version and I'm getting the same messages. Everytime I start my computer, I get the same two messages and have to click out of them to keep going. I've installed another browser, but at this point, I just want to uninstall Foxfire so it stops popping up with error messages all the time.

Anybody know how to resolve this? Thanks.

Hello,

After updating Firefox to version 127.0, I started having problems with the playback of some media files. In particular, audio files with the .wav extension do not show the playback time and the file cannot be played. I can play the same media files in previous versions of Firefox and other browsers (e.g. Chrome) without any problems.

Since I think the problem is caused by a browser update, I would like to ask for your help. If you have any solutions or feedback on this issue, please share it.

Thank you.

I've not been able to download anything on Firefox for about 3-4 weeks now. Every time I try to it immediately fails with no explanation given. The only type of download that works is "Save Image As..." Even trying to download a picture with a download button instead of right clicking nets an immediate fail. I feel like I've done everything to try and troubleshoot it myself, but nothing seems to be working.

I've restarted my computer, ran Firefox in troubleshoot mode, refreshed and reinstalled it, checked for viruses and malware, tried both nightly and ESR versions, tried running them as admin, logged out of my Firefox profile, cleared my cookies and cache, changed and reset the download folder, ran a repair for Visual C++, and reset my windows security settings. I'm honestly surprised nothing has worked.

The only thing that I know I haven't tried yet it refreshing my entire computer, but that's my very far last resort because I'm able to download files just fine on Microsoft Edge. Only the Firefox applications have given me any problems, so if I were to refresh my computer and have the problem still not be solved somehow I'd be deleting everything to get nowhere.

If anyone has any other ideas to try that be very much appreciated.

I disabled graphics acceleration and I have the same problem. I tried several distros, it's the same thing each time, Firefox crashes and it's impossible to surf. could someone help me? I'm on opensuse thunbelweed

Signature core::option::expect_failed | webrender::scene_building::NodeIdToIndexMapper::get_spatial_node_index More Reports Search UUID 319ba611-fc97-439f-9456-a9e8d0240613 Date Processed 2024-06-13 05:28:23 UTC Uptime 78 seconds (1 minute and 18 seconds) Install Age 47,424 seconds since version was first installed (13 hours, 10 minutes and 24 seconds) Install Time 2024-06-12 16:15:12 Product Firefox Release Channel release Version 126.0 Build ID 20240509170740 (2024-05-09) Buildhub data OS openSUSE Tumbleweed OS Version 6.9.1-1-default #1 SMP PREEMPT_DYNAMIC Fri May 17 11:59:46 UTC 2024 (0c0b0b5) Build Architecture amd64 CPU Info family 23 model 24 stepping 1 CPU Count 8 Adapter Vendor ID

Advanced Micro Devices, Inc. [AMD/ATI] (0x1002)

Adapter Device ID

Picasso/Raven 2 [Radeon Vega Series / Radeon Vega Mobile Series] (0x15d8)

Startup Crash

False

Process Type parent MOZ_CRASH Reason (Sanitized)

no entry found for key

Crash Reason SIGSEGV / SEGV_MAPERR Crash Address 0x0000000000000000 Available Virtual Memory 4,520,636,416 bytes (4.52 GB) Available Page File 59,609,088 bytes (59.61 MB) Available Physical Memory 2,234,359,808 bytes (2.23 GB) EMCheckCompatibility

True

App Notes

openSUSE TumbleweedFP(D00-L1000-W0000000-T010) WR? WR+ libGL.so.1? libGL.so.1+ EGL? EGL- GL Context? GL Context+ WebGL? WebGL+

Crashing Thread (75), Name: WRScene~ilder#1 Frame Module Signature Source Trust 0 libxul.so RustMozCrash context 1 libxul.so mozglue_static::panic_hook /usr/src/debug/firefox-126.0/mozglue/static/rust/lib.rs:98 inlined 1 libxul.so core::ops::function::Fn::call /usr/src/debug/rustc-1.76.0-src/library/core/src/ops/function.rs:79 cfi 2 libxul.so std::panicking::rust_panic_with_hook cfi 3 libxul.so std::panicking::begin_panic_handler::{{closure}} cfi 4 libxul.so std::sys_common::backtrace::__rust_end_short_backtrace cfi 5 libxul.so rust_begin_unwind cfi 6 libxul.so core::panicking::panic_fmt cfi 7 libxul.so core::option::expect_failed cfi 8 libxul.so core::option::Option<T>::expect /usr/src/debug/rustc-1.76.0-src/library/core/src/option.rs:894 inlined 8 libxul.so <std::collections::hash::map::HashMap<K, V, S> as core::ops::index::Index<&Q>>::index /usr/src/debug/rustc-1.76.0-src/library/std/src/collections/hash/map.rs:1338 inlined 8 libxul.so webrender::scene_building::NodeIdToIndexMapper::get_spatial_node_index /usr/src/debug/firefox-126.0/gfx/wr/webrender/src/scene_building.rs:141 inlined 8 libxul.so webrender::scene_building::SceneBuilder::get_space /usr/src/debug/firefox-126.0/gfx/wr/webrender/src/scene_building.rs:1258 cfi 9 libxul.so webrender::scene_building::SceneBuilder::process_common_properties /usr/src/debug/firefox-126.0/gfx/wr/webrender/src/scene_building.rs:1275 cfi 10 libxul.so webrender::scene_building::SceneBuilder::process_common_properties_with_bounds /usr/src/debug/firefox-126.0/gfx/wr/webrender/src/scene_building.rs:1320 inlined 10 libxul.so webrender::scene_building::SceneBuilder::build_item /usr/src/debug/firefox-126.0/gfx/wr/webrender/src/scene_building.rs:1435 cfi 11 libxul.so webrender::scene_building::SceneBuilder::build_all /usr/src/debug/firefox-126.0/gfx/wr/webrender/src/scene_building.rs:977 inlined 11 libxul.so webrender::scene_building::SceneBuilder::build /usr/src/debug/firefox-126.0/gfx/wr/webrender/src/scene_building.rs:588 cfi 12 libxul.so webrender::scene_builder_thread::SceneBuilderThread::process_transaction /usr/src/debug/firefox-126.0/gfx/wr/webrender/src/scene_builder_thread.rs:593 inlined 12 libxul.so webrender::scene_builder_thread::SceneBuilderThread::run::{{closure}} /usr/src/debug/firefox-126.0/gfx/wr/webrender/src/scene_builder_thread.rs:314 inlined 12 libxul.so core::iter::adapters::map::map_try_fold::{{closure}} /usr/src/debug/rustc-1.76.0-src/library/core/src/iter/adapters/map.rs:92 inlined 12 libxul.so core::iter::traits::iterator::Iterator::try_fold /usr/src/debug/rustc-1.76.0-src/library/core/src/iter/traits/iterator.rs:2462 inlined 12 libxul.so <core::iter::adapters::map::Map<i> as core::iter::traits::iterator::Iterator>::try_fold /usr/src/debug/rustc-1.76.0-src/library/core/src/iter/adapters/map.rs:118 inlined 12 libxul.so >::call_once /usr/src/debug/rustc-1.76.0-src/library/core/src/panic/unwind_safe.rs:272 inlined 14 libxul.so std::panicking::try::do_call /usr/src/debug/rustc-1.76.0-src/library/std/src/panicking.rs:552 inlined 14 libxul.so std::panicking::try /usr/src/debug/rustc-1.76.0-src/library/std/src/panicking.rs:516 inlined 14 libxul.so std::panic::catch_unwind /usr/src/debug/rustc-1.76.0-src/library/std/src/panic.rs:142 inlined 14 libxul.so std::thread::Builder::spawn_unchecked_::{{closure}} /usr/src/debug/rustc-1.76.0-src/library/std/src/thread/mod.rs:528 inlined 14 libxul.so core::ops::function::FnOnce::call_once{{vtable.shim}} /usr/src/debug/rustc-1.76.0-src/library/core/src/ops/function.rs:250 cfi 15 libxul.so std::sys::unix::thread::Thread::new::thread_start cfi 16 firefox set_alt_signal_stack_and_start(PthreadCreateParams*) cfi 17 libc.so.6 start_thread /usr/src/debug/glibc-2.39/nptl/pthread_create.c:447 cfi 18 libc.so.6 __clone3

I am trying to access websites that use three.js. When I initially start, the website runs too slowly to be usable, but if I tab out for some time and then tab back in, the website runs at normal speed for a bit before slowing down again. I cannot find any solutions to this problem nor anyone else who had the same problem as me.

OS: Windows 11 Home 23H2 (22635.3720) Firefox Version: 126.0.1 GPU: GIGABYTE NVIDIA RTX 4060 Ti 8GB GPU Drivers: Game Ready 555.99

I'm getting this Server Not Found page error with the very irritating "Hmm, We're having trouble finding that site" black screen with a doubleclick.net web address. I'm getting it a lot trying to visit totally legit sites and it's pi$$ing me off. It's not happening in Chrome or Edge but I don't like using those for other reasons. Would like to know what's going on with this crap. It used to be only once in a while and a couple of clicks to other links would get me around it but now it's happening a lot and won't let me get to the intended site at all. Very frustrating!

I recently installed Firefox and I keep getting crash notices, even when it is not open/running...

I have verified this through the task manager...Nothing named Firefox or Mozilla is running...

I don't have this issue with either Brave or Chrome, and I have, and keep updated ESET software, so I KNOW this is a Firefox issue...

Unless this issue can be corrected, I will have no choice but to uninstall it, as I don't need software that crashes even when it is not being used...

Hello, On several occasions over the past couple of months, maybe after a recent update, Firefox will not process any web page. In fact, if I try to go to another tab that I had been using, it will not refresh those web pages. However, in most cases, if I try to open in a new window, it works (though it did not just a minute ago). This is very annoying because if you have a couple of tabs open to certain locations, you have to copy down the pages so you don't have to remember where you were in your work. I would imagine that it would be difficult to duplicate but here's my info below. I will be glad to answer any questions you may have.

Thanks!

Ron

Firefox 127.0 "up to date".

Edition Windows 10 Pro Version 22H2 Installed on ‎10/‎12/‎2020 OS build 19045.4412 Experience Windows Feature Experience Pack 1000.19056.1000.0

Device name Processor Intel(R) Core(TM) i7-4600U CPU @ 2.10GHz 2.70 GHz Installed RAM 12.0 GB (11.9 GB usable) Device ID 1454E0E5-654E-469A-A3D3-523BCDAB4CAA Product ID 00330-80000-00000-AA115 System type 64-bit operating system, x64-based processor Pen and touch Pen and touch support with 10 touch points

we did an update and having issues connecting to our Emr keeps saying not secure website but it is firefox is blocking us can someone call me [removed phone# from support forum] Nathalie

When I click on any link, Firefox opens a new tab but the site will never come up.

I've tried Troubleshoot mode and refreshing Firefox but something in one of the recent updates has caused me to not be able to click on any link and have it open. Troubleshoot mode will solve the problem for a couple of clicks and then the problem returns even while still in troubleshoot mode. Firefox has become unusable at this point but I'd like to go back. Please help.