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Trying to download updates from Intel.com and as soon as I click the download button, Firefox just locks up and won't allow me to do anything. I have to basically shut down firfox through task manager to get the browser to work again. I have 139.04 which is the latest update for Firefox

A message to Mozilla if this is a bug how about fixing the problems that some people are having instead of consintration on implementing AI into Firefox as I want a browser that doesn't and isn't link to AI as many other people do as well as some if not most of us are sick to ther back teeth with everything having AI installed with in the programs.

I'm using Win 11 and ver 140.3.1esr (64 bit)

Thunderbird works perfectly except for just one thing. Every time I write any email it freezes after about 2 minutes. If it's a short email, it gets sent. If it's longer, before I can get to the end, the program freezes, and I have to use Task Manager to stop it. No problem receiving and reading emails. This started about a month ago.

I use Bitdefender, but it still happens with that off. Windows is up to date. Any ideas why this is happening? Thanks.

Hi I have just reloaded Thunderbird onto my laptop after installing a new hard drive. It worked Ok until i imported an account and now get this error message even if I uninstall and reinstall.

That appears in a box and thats it.

Cheers Jim

Thunderbird has pretty much disappeared from my iMac, and I cannot find a way to solve this problem. I've restarted Thurnderbird multiple times and restarted the iMac. It came out of nowhere, and I do not know what to do. I've attached a screenshot with the screen that pops up when I open Thunderbird. None of the dropdown menus work, and I cannot access my years of email. Help!

When I attempt to add an attachment, sometimes Mozilla crashes. This happens several times a month. Windows 10 Home "File Explorer" pops up & I can be scrolling and it will crash Mozilla. Other times I am selecting the file to attach & it crashes. I am at a loss as to why. I'm using the latest version & "Send later" is my only add-on.

For about 2 weeks, EVERY time I try to write an email, after typing a few lines or so, the whole window 'grays out' and becomes UN-responsive. I get no error message. Waiting for it to respond doesn't work and I have to close out and re-start Thunderbird. Sometimes Thunderbird will have saved some portion of my email in my 'Drafts' folder, but not reliably, so I have to frequently 'Control + S' - save it to avoid having to re-type the entire message again. Troubleshoot Mode doesn't help, nor does clearing the cache. I've been hoping an update would come up that would solve this, either from Thunderbird or Windows (11), but not so far. Please tell me how I should resolve this - I have used Thunderbird for years (and regularly contribute too) and don't want to have to change to different email client.

Hello,

I use Thunderbird 128.5.2esr with xubuntu 24.04.

All of a sudden (I haven't changed anything) thunderbird hangs completely after a few minutes running. The process does not react at all, I have to kill it. Thunderbird process is then stuck on 100% load.

Already testet (with no success):

• Troubleshooting Mode with deactivated Addons
• Disabled Global Indexing (with deleting global-messages-db.sqlite file)
• Waiting for 20min (in case thread/process is running a long time)
• Reboot OS

I have no idea what the issue is. Does anyone have ideas? Thx, Hugo

Hi,

Today I got some problems with thunderbird. At first, when opening the program, it opens a new message that mentions "Provider for CalDAV & CardDAV: It's time to go" The message is not complete and has some drawing background I could initially still look at my mails but then tried to remove that mail and then the rogram crashed. I tried going into the accounts setting to update and that would also lead to crashing. I tried to set the troubleshoot mode off but it would crash before I can click to turn it off.

Any assistance would be great I use windows 11, 64 bits the thunderbird version is 128.5.2esr (32 bits)

Thanks a lot!

Vincent

The latest crash:

b1ad0fde-1882-41ce-9b80-4fd3e2c5ac20 java.lang.OutOfMemoryError: Failed to allocate a 134217744 byte allocation with 50331584 free bytes and 120MB until OOM, target footprint 125474336, growth limit 201326592

* New Sentry Instance: https://sentry.io/organizations/mozilla/issues/?project=6375561&query=e9bad27f848049fca9e39dc6b2d0abd5
* Socorro: https://crash-stats.mozilla.org/report/index/bp-22da7755-1702-4479-8d06-ab0d60251118

java.lang.OutOfMemoryError: Failed to allocate a 134217744 byte allocation with 50331584 free bytes and 120MB until OOM, target footprint 125474336, growth limit 201326592 at java.util.Arrays.copyOf(Arrays.java:3578) at java.io.ByteArrayOutputStream.grow(ByteArrayOutputStream.java:120) at java.io.ByteArrayOutputStream.ensureCapacity(ByteArrayOutputStream.java:95) at java.io.ByteArrayOutputStream.write(ByteArrayOutputStream.java:156) at kotlin.io.ByteStreamsKt.copyTo(IOStreams.kt:19) at kotlin.io.ByteStreamsKt.readBytes(IOStreams.kt:21) at mozilla.appservices.httpconfig.FetchBackend.sendRequest$lambda$3(FetchBackend.kt:6) at mozilla.appservices.httpconfig.FetchBackend.sendRequest(FetchBackend.kt:274) at mozilla.appservices.viaduct.uniffiCallbackInterfaceBackend$sendRequest$callback$makeCall$1.invokeSuspend(viaduct.kt:49) at mozilla.appservices.viaduct.uniffiCallbackInterfaceBackend$sendRequest$callback$makeCall$1.invoke(viaduct.kt:2) at mozilla.appservices.viaduct.uniffiCallbackInterfaceBackend$sendRequest$callback$makeCall$1.invoke(viaduct.kt:1) at mozilla.appservices.viaduct.uniffiCallbackInterfaceBackend$sendRequest$callback$$inlined$uniffiTraitInterfaceCallAsyncWithError$1.invokeSuspend(viaduct.kt:39) at kotlin.coroutines.jvm.internal.BaseContinuationImpl.resumeWith(ContinuationImpl.kt:9) at kotlinx.coroutines.DispatchedTask.run(DispatchedTask.kt:122) at kotlinx.coroutines.scheduling.CoroutineScheduler$Worker.run(CoroutineScheduler.kt:127) Suppressed: kotlinx.coroutines.internal.DiagnosticCoroutineContextException: [StandaloneCoroutine{Cancelling}@2104835, Dispatchers.Default]

HELP!!!!

Hi -- I'm getting quite a few page crashes that seem mostly tied to YouTube, although not exclusively. I only recently swapped over to Firefox from Chrome because I was having similar crashing issues with that browser as well. This is after a fresh install of Windows 11 Pro and a number of different benchmark tests (no known issues with CPU, GPU, or RAM).

Since there are so many reports that all seem different, could someone help troubleshoot? I really can't tell if it's a browser problem, maybe something with my MOBO or PSU or other hardware.

bp-8849827b-dbff-4f56-ab32-a00e50251111 11/10/2025, 7:04 PM bp-b9b83d66-9ac5-4eae-9676-367000251111 11/10/2025, 7:04 PM bp-4b8e92c0-0a15-45ef-b8e1-567920251111 11/10/2025, 7:02 PM bp-4c1a61f1-674e-4da0-8921-156f50251110 11/10/2025, 12:21 PM bp-659dc04a-4933-4a3b-919b-3c1c50251110 11/10/2025, 12:21 PM bp-9387464a-bc4e-4217-995a-f457f0251110 11/10/2025, 12:21 PM bp-97bc77f5-3fa3-4623-b48b-d94e90251110 11/10/2025, 12:21 PM bp-47d723e7-4eab-41d1-b97b-410ef0251110 11/10/2025, 12:21 PM bp-58abdc4e-d959-41c9-bf0a-469280251110 11/10/2025, 12:21 PM bp-b593054f-5a6c-4693-82c8-79d410251109 11/9/2025, 6:47 PM bp-13f555f8-c219-4995-b09f-b15440251109 11/9/2025, 2:11 PM bp-91cbf8ab-d793-4781-ba28-0fd030251109 11/9/2025, 2:11 PM bp-5e7db47b-6114-4cc6-a1ac-daaca0251109 11/9/2025, 2:11 PM bp-ef240795-bedf-4c26-91f2-386ba0251109 11/9/2025, 2:11 PM bp-51ec26ab-03f0-4e0b-b199-b2f600251109 11/9/2025, 2:11 PM bp-aef18aaf-1b2e-410e-9170-99fd50251109 11/9/2025, 2:11 PM bp-e5bc73e3-293e-4b3a-8974-e088c0251107 11/7/2025, 1:38 PM bp-85a1ba73-0df8-484b-b9bb-945cc0251107 11/7/2025, 10:59 AM bp-26c84615-670b-49e8-88aa-c26ac0251107 11/7/2025, 10:59

Submitted Crash Reports Report ID Date Submitted bp-28e075fd-226a-4a7c-bbeb-4066f0250119 19/01/2025, 12:16 pm View bp-ddcd262a-6efe-49db-b2fd-db21f0250119 19/01/2025, 12:16 pm View this happens at the most annoying time, I have submitted the crash reports as advised.

On my Framework 13, Thunderbird has stopped. Message reads Oups! We're sorry, it looks like thunderbird crashed. Please contact the developer if you want to report the issue. At 85, I'm anything but a nerd. Could someone please help me in simple, everyday terms? I have a lot of incoming and outgoing emails, and am completely stuck. Thank you.

Greetings. TB crashes - It originally died after a short period of working. Managed to empty cache which seemed to have solved it, but then it came back with vengence and has given me no chance to explore as it won't load at all. I used to use folders for mail and also regularly compressed, however not the last few years. I also have a few Mozbackup files, but restoring a recent one of these has not helped. I am now finding it frustrating not being able to reach my messages. It is set up mainly as POP, with a number of different email addresses all reached through a common inbox. I have been using TB for decades and this is first issue like this. Glad of any suggestions. David

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

Thunderbird has worked fine for me for years on my Windows 10 Pro machine. The computer works perfectly otherwise--and has a large amount of RAM. But a few weeks ago, Thunderbird started freezing (stops responding) at some point while I'm writing a message.

What happens is that I'll start to write an e-mail message in Thunderbird, and at some random point (from a few seconds to a few minutes) it will stop adding what I'm typing, and soon the text that it was showing grays out. It will then say Thunderbird has stopped responding, and I have no other choice than to close Thunderbird. I have no way of saving or recovering the message I had been typing--very frustrating!

As a partial work-around, I found that if I click on "Save" every time I add a little more to the message I'm trying to write, then at least when I restart Thunderbird I can go to Drafts and recover the message (as it was the last time I clicked "Save").

Thunderbird still works fine for all other functions (reading received messages, etc.). It only has the stopping responding problem randomly when I'm trying to write a message. It can happen while I'm typing--or during a pause between writing sentences. And the timing of the problem is very random and variable (from almost immediate to a few minutes). I tried running Thunderbird in Safe mode, but the problem was the same...

I always keep up with Thunderbird updates. Currently, I'm using version 140.1.1esr.

Can you give me any help with a solution? This problem is maddening!

Thank you,

Vincent Andrunas

Thunderbird will run and retrieve messages from account, but keeps crashing after 1-2 minutes each time. There are a lot of archived emails, and 1,500+ in Inbox, but sufficient disk space on the PC.

bp-89f57836-bb7a-49cf-8a38-44c490250117

When I try to add a new Mail Account, the "Looking up configuration" step hangs indefinitely. I have to force a hard exit to reopen the app. I was able to add my hotmail account without issue, but now that I'm trying to add @yahoo.co.uk , it just freezes up. Thx

Windows 10, newest Thunderbird.

Thunderbird started crashing randomly about 2 days ago, however, after restart, it would remain running if I switched to troubleshooting mode. I removed an add-on from Bitdefender in troubleshooting mode.

Today I can't even open Thunderbird-- it crashes on launch. It won't launch even if I hit the Shift key or if I turn off antivirus.

Here is the most recent submitted crash report:

Crash ID: ⁨bp-b52cd345-636f-445a-ab4c-764ca0250114⁩

Can someone please give me guidance on what is going on and how to fix it?

Thank you.

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