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Why does my Firefox freeze then crash?

So for three days now, my firefox constantly crashes. I would be reading a story online or watching a video on Youtube and then it will suddenly freeze. In videos, it'll … (tuilleadh eolais)

So for three days now, my firefox constantly crashes. I would be reading a story online or watching a video on Youtube and then it will suddenly freeze. In videos, it'll still play the sound but the screen will freeze. I can't pause or stop it. Then either Firefox crashes and closes or I have to close it for it to stop. Sometimes, when I try opening it again, it still won't open. I used to have 50 tabs open and never ad this issue. After this, I closed all the open tabs, even deactivated a bunch of extensions, run malware detection, and still the issue continues. I don't know what the problem is. I even followed instructions and deactivated hardware acceleration options in Performance. And I have all AI options turned off too. The app also recently was updated.

crash report bp-e455fd8b-e30b-4cdc-811a-346ac0260607

Solved 6 1 90

Since update to v 153 Firefox freezes, then crashes regularly.

Firefox v153 downloaded a day or 2 ago. Since when it freezes, cannot access internet, then crashes regularly. have to restart to get it working again. PC with windows 1… (tuilleadh eolais)

Firefox v153 downloaded a day or 2 ago. Since when it freezes, cannot access internet, then crashes regularly. have to restart to get it working again. PC with windows 10. Despite windows settings showing internet connected, and other device connection fine. I've stopped the VPN plugin. Have submitted 3 crash reports just now bp-03b76eff-3e9d-4778-a790-7913d0260725 bp-f4ffd17f-b408-4b1a-a1ea-391190260725 bp-123c3ae2-1d94-4abb-a040-875720260725

It was freezing every few days before the update, but now it's 2-3 times a day.

Solved 3 1 80

Crashes when opening a new tab

When playing a YouTube video and attempting to open a new tab, Firefox consistently crashes. This was also occurring with Picture-in-Picture mode. Has anyone else encoun… (tuilleadh eolais)

When playing a YouTube video and attempting to open a new tab, Firefox consistently crashes. This was also occurring with Picture-in-Picture mode.

Has anyone else encountered this?

Solved 8 1 140

Firefox version 153.0.1 causing hangup when "Clear Recent History" is selected.

Immediately after I downloaded the latest update 153.0.1 for Firefox on the Mac, I noticed an issue with the Clear Recent History request. Whenever I select Clear Recent … (tuilleadh eolais)

Immediately after I downloaded the latest update 153.0.1 for Firefox on the Mac, I noticed an issue with the Clear Recent History request. Whenever I select Clear Recent History (under History in the top bar menu), the popup box that opens always shows it is "calculating" the data, even if I only visited one website and closed it (or left it open). If the Clear button is active, I will click it and the box closes, but I never know if the history was cleared.

However, many times, the Clear button is grayed out while the "calculating" is in progress, and it freezes up the popup box. I cannot close it or click on any other part of the screen. It appears to freeze (crash) Firefox. My only option then is to quit Firefox and reopen it. When I do, the popup box is gone. But I still have no confirmation that the history has been deleted. But after visiting one or more websites that I want cleared of history (news sites, etc) the issue reappears again as soon as I select Clear Recent History.

I have a whitelist of many sites that I allow to store cookies and site data. But for all other sites, I routinely clear my history when I am done viewing them. This issue has never happened before, so I'm wondering if it is a bug in the latest 153.0.1 update. Before I downloaded the latest Firefox update, I checked to make sure it was compatible with my current version of Ventura 13.7.8 on a MBP 2022. And the clear history issue never appeared when I was on Firefox 152.0.6.

Attached is a screenshot of what the Clear Recent History popup looks like when "calculating"...

Solved 14 1 20

FREQUENT FIREFOX CRASHES!

WHY CAN'T YOU FIX YOUR BUGGY BROWSERS??? LOOKS LIKE I'M GOING TO OPERA OR EDGE NOW!!! STOP C0000005 ERRORS! I CAN'T BELIEVE HOW YOU'VE MESSED UP A ONCE-GOOD BROWSER! … (tuilleadh eolais)

WHY CAN'T YOU FIX YOUR BUGGY BROWSERS??? LOOKS LIKE I'M GOING TO OPERA OR EDGE NOW!!! STOP C0000005 ERRORS! I CAN'T BELIEVE HOW YOU'VE MESSED UP A ONCE-GOOD BROWSER!

Locked Cartlannaithe 1 200

Tabs keep crashing

Hey, I've been experiencing my YouTube and Twitch tabs crashing almost every 20-40 minutes and it's been kind of annoying. Does anyone know if the crashes are because of … (tuilleadh eolais)

Hey, I've been experiencing my YouTube and Twitch tabs crashing almost every 20-40 minutes and it's been kind of annoying.

Does anyone know if the crashes are because of my drivers or Windows not being up to date? Never had this issue with Opera before.

Here are the crash reports: link text link text link text link text link text link text link text

Solved Cartlannaithe 2 300

Is there a way to revert to prior settings to avoid 'Not Responding' after starting Thunderbird

Hi. On Windows 11. after adding an ical calendar, Thunderbird immediately stops responding. If I then stop and restart Thunderbird it continues to not respond. 1. Is th… (tuilleadh eolais)

Hi. On Windows 11. after adding an ical calendar, Thunderbird immediately stops responding. If I then stop and restart Thunderbird it continues to not respond. 1. Is there a simple way to revert to the state prior to the addition of the calendar? Or can a point of consistency be established prior to adding the calendar to make reverting to this point a possibility? 2. I presume that there is some issue with the contents of the ical. Is there any way to work out what might be the issue that Thunderbird is not handling? The calendar is a Google Calendar and works fine there. Thanks in advance.

Solved Cartlannaithe 1 198

Thunderbird 140.0.1esr freezes during typing text of new messages

Thunderbird pushed out an automatic update last night (July 13 2025) to version 140.0.1esr. Since then I cannot complete creating and typing a new message without Thunde… (tuilleadh eolais)

Thunderbird pushed out an automatic update last night (July 13 2025) to version 140.0.1esr. Since then I cannot complete creating and typing a new message without Thunderbird freezing completely during entry of the text of a new message. I am running Windows-11 home, version 24h2. I have rebooted, etc. multiple times. I also ran thunderbird in troubleshooting mode and the problem still exists.

Please help - as of today Thunderbird is completely useless to me.

wellerhn@gmail.com

Solved Cartlannaithe 6 180

Adding 2nd e-mail account on Thunderbird hangs

I'm able to add an e-mail account but when I go to add a second e-mail account, when it looks up the information, it just hangs with the circle going around. This is true… (tuilleadh eolais)

I'm able to add an e-mail account but when I go to add a second e-mail account, when it looks up the information, it just hangs with the circle going around.

This is true for two different user accounts on the same computer.

I've uninstalled and reinstalled Thunderbird but it didn't help.

Thunderbird can't be exited without killing from the task manager or shutting down.

Solved Locked Cartlannaithe 6 170

Nonstop tab crashes.

My tabs crash all the time. Sometimes it'll go a while without crashing, other times it's literally every two seconds. Particularly if I'm doing anything that doesn't aut… (tuilleadh eolais)

My tabs crash all the time. Sometimes it'll go a while without crashing, other times it's literally every two seconds. Particularly if I'm doing anything that doesn't autosave. Thanks. Sometimes it's just whatever tab I'm on (or occasionally I'll click on one I've had open in the background only to discover it crashed at some point, other times (and not infrequently!) it crashes the entire browser. Sometimes when it does that, it also logs me out of everything for no particular reason as a little sadistic cherry on top. The passwords are still saved I'm just logged out of EVERYTHING. A few times, it seemed to have made my bookmarks go away, but force-stopping it and re-entering made them reappear, so they weren't deleted. I don't know what's going on but I'm at my wit's end. The crash reports mostly just say EXCEPTION_ACCESS_VIOLATION_WRITE (I haven't checked every single one individually since there's too many, but the ones I've clicked on all say that as far as I recall). If this keeps up I'm going to have to switch browsers or something because I'm actually losing it.

Solved 16 20

Thunderbird freezes when typing text into new messages SOLVED with accessibility.force_disabled > change the value to 1 (bug1972457)

Thunderbird is freezing when I try to type a message into the new message window. It takes maybe 100 characters or so, then just freezes and requires ctrl-alt-del and en… (tuilleadh eolais)

Thunderbird is freezing when I try to type a message into the new message window. It takes maybe 100 characters or so, then just freezes and requires ctrl-alt-del and end task to get out of it. This began with auto-installation of 140.0.1 as described below, and is 100% reproducible.

Environment: Windows 11 home 64 bit (specifically 2025-07 Cumulative Update for Windows 11 Version 24H2 for x64-based Systems )

Running Thunderbird 140.0.1: Thunderbird 140.1.1esr was auto installed on July 10, 2025. Version history says that the install failed, but version showed as 140.0.1esr. This is when the problem began. On July 18th, I downloaded the release version of Thunderbird and installed that (140.0.1 - no esr). This did not resolve the problem. Troubleshooting info now shows 140.0.1 - no esr as the current version, but the update history does not show that upgrade/downgrade in the list, so I'm not sure it happened.

Things I have tried: Windows safe mode Thunderbird safe mode Clear caches Removed several mail accounts from Thunderbird

Below is system info from Thunderbird troubleshooting page.

 Application Basics
   Name: Thunderbird
   Version: 140.0.1
   Build ID: 20250709044702
   Distribution ID:
Solved Cartlannaithe 2 359

2 "Not responding" messages lasting about a minute each before finally connecting. McAfee?

For about the last year when I try to open Mozilla Thunderbird calendar, instead of taking me to the active calendar page, I get a “Not Responding” message and an hourgla… (tuilleadh eolais)

For about the last year when I try to open Mozilla Thunderbird calendar, instead of taking me to the active calendar page, I get a “Not Responding” message and an hourglass for about 1 minute. That eventually disappears. I then have to select “Calendar” and wait another minute or so with another “Not Responding” message before I can finally get to the active calendar page and do what I wish to do on the calendar. When I remove the app and reinstall it, the problem disappears once ONLY and reappears after that. Can you suggest a solution to the problem, please. I have a Dell Inspiron 3793 laptop.

Thank you.

EDL

Solved Cartlannaithe 5 110

Thunderbird crashes after appr. 3 minutes (win10)

Hello, I am using Windows 11. I recently installed the latest update 24H2. Since a few days I have the issue that Thunderbird freeses after appr. 3 minutes of use. There … (tuilleadh eolais)

Hello, I am using Windows 11. I recently installed the latest update 24H2. Since a few days I have the issue that Thunderbird freeses after appr. 3 minutes of use. There is no crash report window popping up. I will be thankful to receive some kind of support. Thank you very much, Holger

Solved Cartlannaithe 5 50

New tabs always crash

I keep having an issue on my desktop of every new tab I open crashing. I can access the homepage, but if I put anything into the search bar, the screen goes to "Gah. Your… (tuilleadh eolais)

I keep having an issue on my desktop of every new tab I open crashing. I can access the homepage, but if I put anything into the search bar, the screen goes to "Gah. Your tab just crashed. We can help! Choose Restore This Tab to reload the page." And when I try to restore the page, it brings me back to that screen again. I couldn't even access Mozilla Support on my desktop to report this, I am on this site through my phone.

Solved Cartlannaithe 2 210

Thunderbird not accessible

Thunderbird will not open. Instead a page appears asking me to open a new account, with an octopus icon and the heading FREEDOM. Is this a scam? I am desperate, I constan… (tuilleadh eolais)

Thunderbird will not open. Instead a page appears asking me to open a new account, with an octopus icon and the heading FREEDOM. Is this a scam? I am desperate, I constantly need access to my sent emails and address list. What is happening? I do not understand the terminology on the page about crashes.

Solved Locked Cartlannaithe 1 80

Crash on wake from Sleep

Following https://support.mozilla.org/en-US/kb/troubleshoot-firefox-crashes-closing-or-quitting Crash Reports (Newest to Oldest, starting with troubleshoot mode: https://… (tuilleadh eolais)

Solved 5 220