Thunderbird Community Forum

For over 1 week now I am finding that T-Bird freezes or locks after I have opened several messages. Leaves me unable to read or delete messages and unable to close down T-bird

Dear All,

I am using Mozilla under Windows 10 in combiation with Bitdefender Anti-Virus-SW. Mozilla worked quite well with this combination. Since two day, I am not aware of any updates, I am not ablel to lauch Mozilla (no reaction). I deactived Bitdefender and tried also the protected mode for Mozilla (deactivating any add-ins). Unfortunately this had no impact. I could not find any helpful advice in forums. Prior de-installing and re-installing SW I am looking for additional hints.

Best Regards Jochen

PC: Intel CPU OS: Windows 11 DNS: Google

Thunderbird repeatedly crashes and locks up the task bar. The now frozen PC has to be rebooted by manually powering down the machine. I am in the release channel and using the latest version.

From time to time especially when I make a break and the screensaver starts Thunderbird crashes. There is a split between the taskbar of Cinnamon and Thunderbird. The program doesn't react anymore. The only way to use it is to kill it and start it again. I really don't know why this happens. It is a new phenomenon. Here are my Systeminformation: [code] System:

 Kernel: 6.8.0-90-generic arch: x86_64 bits: 64 compiler: gcc v: 13.3.0 clocksource: tsc
 Desktop: Cinnamon v: 6.4.8 tk: GTK v: 3.24.41 wm: Muffin v: 6.4.1 vt: 7 dm: LightDM v: 1.30.0
   Distro: Linux Mint 22.2 Zara base: Ubuntu 24.04 noble

Machine:

 Type: Desktop System: Gigabyte product: A320M-H v: N/A serial: <superuser required>
 Mobo: Gigabyte model: A320M-H-CF v: x.x serial: <superuser required> uuid: <superuser required>
   UEFI: American Megatrends v: F42 date: 08/23/2019

CPU:

 Info: 6-core model: AMD Ryzen 5 2600 bits: 64 type: MT MCP smt: enabled arch: Zen+ rev: 2 cache:
   L1: 576 KiB L2: 3 MiB L3: 16 MiB
 Speed (MHz): avg: 2332 high: 3892 min/max: 1550/3400 boost: enabled cores: 1: 1557 2: 3883
   3: 1550 4: 3892 5: 1557 6: 1557 7: 1554 8: 3892 9: 1556 10: 3879 11: 1558 12: 1557
   bogomips: 81435
 Flags: avx avx2 ht lm nx pae sse sse2 sse3 sse4_1 sse4_2 sse4a ssse3

Graphics:

 Device-1: AMD Baffin [Radeon RX 550 640SP / 560/560X] vendor: Micro-Star MSI driver: amdgpu
   v: kernel arch: GCN-4 pcie: speed: 8 GT/s lanes: 8 ports: active: HDMI-A-1 empty: DP-1,DVI-D-1
   bus-ID: 07:00.0 chip-ID: 1002:67ff class-ID: 0300 temp: 39.0 C
 Device-2: Microdia Webcam Vitade AF driver: snd-usb-audio,uvcvideo type: USB rev: 2.0
   speed: 480 Mb/s lanes: 1 bus-ID: 3-2:2 chip-ID: 0c45:6366 class-ID: 0102 serial: <filter>
 Display: x11 server: X.Org v: 21.1.11 with: Xwayland v: 23.2.6 driver: X: loaded: amdgpu
   unloaded: fbdev,modesetting,vesa dri: radeonsi gpu: amdgpu display-ID: :0 screens: 1
 Screen-1: 0 s-res: 3840x2160 s-dpi: 96 s-size: 1016x571mm (40.00x22.48")
   s-diag: 1165mm (45.88")
 Monitor-1: HDMI-A-1 mapped: HDMI-A-0 model: Samsung U28E590 serial: <filter> res: 3840x2160
   hz: 30 dpi: 160 size: 608x345mm (23.94x13.58") diag: 699mm (27.5") modes: max: 3840x2160
   min: 720x400
 API: EGL v: 1.5 hw: drv: amd radeonsi platforms: device: 0 drv: radeonsi device: 1 drv: swrast
   gbm: drv: kms_swrast surfaceless: drv: radeonsi x11: drv: radeonsi inactive: wayland
 API: OpenGL v: 4.6 compat-v: 4.5 vendor: amd mesa v: 25.0.7-0ubuntu0.24.04.2 glx-v: 1.4
   direct-render: yes renderer: AMD Radeon RX 560 Series (radeonsi polaris11 ACO DRM 3.57
   6.8.0-90-generic) device-ID: 1002:67ff

Audio:

 Device-1: AMD Baffin HDMI/DP Audio [Radeon RX 550 640SP / 560/560X] vendor: Micro-Star MSI
   driver: snd_hda_intel v: kernel pcie: speed: 8 GT/s lanes: 8 bus-ID: 07:00.1 chip-ID: 1002:aae0
   class-ID: 0403
 Device-2: AMD Family 17h HD Audio vendor: Gigabyte driver: snd_hda_intel v: kernel pcie:
   speed: 8 GT/s lanes: 16 bus-ID: 09:00.3 chip-ID: 1022:1457 class-ID: 0403
 Device-3: Microdia Webcam Vitade AF driver: snd-usb-audio,uvcvideo type: USB rev: 2.0
   speed: 480 Mb/s lanes: 1 bus-ID: 3-2:2 chip-ID: 0c45:6366 class-ID: 0102 serial: <filter>
 API: ALSA v: k6.8.0-90-generic status: kernel-api
 Server-1: PipeWire v: 1.0.5 status: active with: 1: pipewire-pulse status: active
   2: wireplumber status: active 3: pipewire-alsa type: plugin

Network:

 Device-1: Realtek RTL8111/8168/8211/8411 PCI Express Gigabit Ethernet vendor: Gigabyte
   driver: r8169 v: kernel pcie: speed: 2.5 GT/s lanes: 1 port: f000 bus-ID: 06:00.0
   chip-ID: 10ec:8168 class-ID: 0200
 IF: enp6s0 state: up speed: 1000 Mbps duplex: full mac: <filter>

Bluetooth:

 Device-1: ASUSTek ASUS USB-BT500 driver: btusb v: 0.8 type: USB rev: 1.1 speed: 12 Mb/s lanes: 1
   bus-ID: 1-7:2 chip-ID: 0b05:190e class-ID: e001 serial: <filter>
 Report: hciconfig ID: hci0 rfk-id: 0 state: up address: <filter> bt-v: 5.1 lmp-v: 10
   sub-v: d922 hci-v: 10 rev: dfc6 class-ID: 7c0104

Drives:

 Local Storage: total: 1.36 TiB used: 492.77 GiB (35.3%)
 ID-1: /dev/sda vendor: Western Digital model: WDS500G2B0B-00YS70 size: 465.76 GiB
   speed: 6.0 Gb/s tech: SSD serial: <filter> fw-rev: 20WD scheme: MBR
 ID-2: /dev/sdb vendor: Western Digital model: WD10SPZX-22Z10T0 size: 931.51 GiB type: USB
   rev: 3.0 spd: 5 Gb/s lanes: 1 tech: HDD rpm: 5400 serial: <filter> fw-rev: 1201 scheme: MBR

Partition:

 ID-1: / size: 72.78 GiB used: 44.49 GiB (61.1%) fs: ext4 dev: /dev/sda2
 ID-2: /boot/efi size: 187.1 MiB used: 6.1 MiB (3.3%) fs: vfat dev: /dev/sda1
 ID-3: /home size: 383.86 GiB used: 232.71 GiB (60.6%) fs: ext4 dev: /dev/sda3

Swap:

 ID-1: swap-1 type: file size: 8 GiB used: 782.5 MiB (9.6%) priority: -2 file: /swapfile

USB:

 Hub-1: 1-0:1 info: hi-speed hub with single TT ports: 9 rev: 2.0 speed: 480 Mb/s lanes: 1
   chip-ID: 1d6b:0002 class-ID: 0900
 Device-1: 1-7:2 info: ASUSTek ASUS USB-BT500 type: bluetooth driver: btusb interfaces: 2
   rev: 1.1 speed: 12 Mb/s lanes: 1 power: 500mA chip-ID: 0b05:190e class-ID: e001 serial: <filter>
 Hub-2: 2-0:1 info: super-speed hub ports: 3 rev: 3.1 speed: 10 Gb/s lanes: 1 chip-ID: 1d6b:0003
   class-ID: 0900
 Hub-3: 3-0:1 info: hi-speed hub with single TT ports: 4 rev: 2.0 speed: 480 Mb/s lanes: 1
   chip-ID: 1d6b:0002 class-ID: 0900
 Device-1: 3-2:2 info: Microdia Webcam Vitade AF type: video,audio
   driver: snd-usb-audio,uvcvideo interfaces: 4 rev: 2.0 speed: 480 Mb/s lanes: 1 power: 500mA
   chip-ID: 0c45:6366 class-ID: 0102 serial: <filter>
 Hub-4: 3-3:3 info: Terminus Hub ports: 4 rev: 2.0 speed: 480 Mb/s lanes: 1 power: 100mA
   chip-ID: 1a40:0101 class-ID: 0900
 Device-1: 3-3.3:4 info: YICHIP Wireless Device type: keyboard,mouse driver: hid-generic,usbhid
   interfaces: 2 rev: 2.0 speed: 12 Mb/s lanes: 1 power: 100mA chip-ID: 3151:3020 class-ID: 0301
   serial: <filter>
 Device-2: 3-3.4:5 info: CHERRY Keyboard type: keyboard,HID driver: cherry,usbhid interfaces: 2
   rev: 2.0 speed: 1.5 Mb/s lanes: 1 power: 100mA chip-ID: 046a:0023 class-ID: 0300
 Hub-5: 4-0:1 info: super-speed hub ports: 4 rev: 3.0 speed: 5 Gb/s lanes: 1 chip-ID: 1d6b:0003
   class-ID: 0900
 Device-1: 4-1:2 info: JMicron / USA External USB 3.0 type: mass storage driver: uas
   interfaces: 1 rev: 3.0 speed: 5 Gb/s lanes: 1 power: 896mA chip-ID: 152d:0579 class-ID: 0806
   serial: <filter>

Sensors:

 System Temperatures: cpu: 39.9 C mobo: 31.0 C gpu: amdgpu temp: 39.0 C
 Fan Speeds (rpm): N/A gpu: amdgpu fan: 1104

Repos:

 Packages: 3485 pm: dpkg pkgs: 3444 pm: flatpak pkgs: 41
 No active apt repos in: /etc/apt/sources.list
 Active apt repos in: /etc/apt/sources.list.d/agornostal-ulauncher-noble.list
   1: deb [signed-by=/etc/apt/keyrings/agornostal-ulauncher-noble.gpg] https: //ppa.launchpadcontent.net/agornostal/ulauncher/ubuntu noble main
 Active apt repos in: /etc/apt/sources.list.d/brave-browser-release.list
   1: deb [signed-by=/usr/share/keyrings/brave-browser-archive-keyring.gpg] https: //brave-browser-apt-release.s3.brave.com/ stable main
 No active apt repos in: /etc/apt/sources.list.d/devolo-updates.list
 Active apt repos in: /etc/apt/sources.list.d/google-chrome.list
   1: deb [arch=amd64] https: //dl.google.com/linux/chrome/deb/ stable main
 Active apt repos in: /etc/apt/sources.list.d/official-package-repositories.list
   1: deb http: //packages.linuxmint.com zara main upstream import backport
   2: deb http: //archive.ubuntu.com/ubuntu noble main restricted universe multiverse
   3: deb http: //archive.ubuntu.com/ubuntu noble-updates main restricted universe multiverse
   4: deb http: //archive.ubuntu.com/ubuntu noble-backports main restricted universe multiverse
   5: deb http: //security.ubuntu.com/ubuntu/ noble-security main restricted universe multiverse
 Active apt repos in: /etc/apt/sources.list.d/vivaldi.list
   1: deb [arch=amd64] https: //repo.vivaldi.com/stable/deb/ stable main
 Active apt repos in: /etc/apt/sources.list.d/zquestz.list
   1: deb [signed-by=/usr/share/keyrings/zquestz-archive-keyring.gpg] https: //zquestz.github.io/ppa/ubuntu ./
 Active apt repos in: /etc/apt/sources.list.d/vscode.sources
   1: deb [arch=amd64] https: //packages.microsoft.com/repos/code stable main

Info:

 Memory: total: 8 GiB available: 7.69 GiB used: 3.97 GiB (51.5%)
 Processes: 409 Power: uptime: 9h 12m states: freeze,mem,disk suspend: deep wakeups: 0
   hibernate: platform Init: systemd v: 255 target: graphical (5) default: graphical
 Compilers: gcc: 13.3.0 Client: Unknown python3.12 client inxi: 3.3.34

/code Thanks for help.

Win 11 and Thunderbird 140 not working and I have tried all the things I found on the internet and none of them work. I have tried cleaning my registry and deleted directories and uninstalled thunderbird re-started and it will still not work.

I guess I have to forget thunderbird. It is a shame.

Once I try to add a new email account and have entered the necessary data, I get the ad that the account will be created. However, the program simply hangs up and remains in that display.

For several weeks (I have a work-around for accessing emails) I'm unable to open Thunderbird. First instance of this was Sunday evening Dec 28. I've attached a screenshot of what I see.

I have uninstalled and reinstalled Thunderbird (twice) with obviously no joy.

Any insights would be appreciated.

Please fully explain any file or procedural references; in other words, please do not assume I lmow what you're talking about.

Thanks in advance.

Hi Support, The last Thunderbird Version crash on Mac OS Sequoia 15.7.3 Mac Apple M2 Pro, 16 Gocot RAM The crash occurs after login to install a utility. => Therefore, I cant't use Thunderbird (I am a small Thunderbird doner). NB: I cant't find the command for starting Thunderbird in maintenance mode. Thanks for help

Since about five days, Thunderbird keeps crashing without any notice. Once started again, it crashes after a few minutes -and so on...! What can be done? Thnaks for your help, Manfred

when i went to add a new email account to TB. it just freezes. (same window after 2hrs) I have restarted the app, rebooted the PC, even tried a manual update of TB. same result (see attached). any help would be greatly appreciated.

THUNDERBIRD ver: 147 OS: WINDOWS 10x64

thank you

When I am working from home, on my home network, and using a VPN, (Windows 11) whenever I receive new messages, the app becomes completely frozen. That is, if the app is in the background and I receive an email "bing bong" notification, I can go to the app, but I can not click on anything. Nothing responds. I cannot change tabs, select a message, move the window, or even use the close box to quit the application. I must force quit via the Windows tray icon. If I open the application and it immediately checks for messages and gets new messages, also I can not interact with any on-screen window or element. I must force quit. Then, after force quitting, I reopen again, and get no new messages, the previously new messages I can click on and read. So at no time can I get messages, and continue using the app. I also had a draft email in progress, and received new messages, and then the draft message was non interactive. When I tried to quit the app, I saw a popup message about saving the draft, but also could not click on it. This problem does not happen at work on my internal network and no VPN. Our email is all POP based (yes you read that right, all POP no IMAP), FWIW.

Today - 26/01/2026 - Thunderbird keeps crashing for no reason. I receive a dialogue box to either quit or start Thunderbird again and to add to a crash report. I have been doing this all morning - no response. I have gone onto Mozilla Google search to see if there is a problem - nothing. I have shut down and re-started the computer - nothing happens. Please can you respond and maybe give me a customer service 'live' person who can talk me through this. I have used Thunderbird for over 15 years, but this is defeating me. I am in my late 70's and cannot cope with the way your Community site works. Thank you for your help. Hope to hear from you soonest.

After successfully downloading Thunderbird several times (my browser is Firefox), the only functioning option provided is to make a donation. That is, it's telling me I must make at least a $5 donation in order to proceed to setting up a Thunderbird account. This despite clear statements on the website that donations are not required in order to use Thunderbird. There is no way to skip this step.

After closing the donate window, I'm taken to a nearly-blank screen with absolutely no functioning features on it other than a link that leads to multiple, useless articles about who knows what.

Please fix the site and advise how to proceed without further roadblocks.

When inserting several larger images (JPEG, 1.4 MB, 1770x2440 px, 300 dpi) directly into the message body (i.e. not as an attachment), Thunderbird crashed and the draft of the written message was not saved.

Is there a limit to the maximum size or format of an image that can be inserted directly into the body of the message?

I am using THB release 140.6.0esr/32-bit

Thunderbird (current version) freezes each time an email is closed and when it does so, it freezes the entire computer. Computer: MacBook Pro 16"; Tahoe 26.2. The freeze last for 2-5 seconds before it releases.