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I have no accounts, no old emails, nothing.

Version 153.4.0esr | Released September 30, 2026

Update History The following updates have been installed Thunderbird 153.4.Oesr (20260929234349) Installed on: October 5, 2026 at 6:23:30 AM Status: The Update was successfully installed Thunderbird 153.3. lesr (20260917204311) Installed on: September 18, 2026 at 3:24:29 PM Status: The Update was successfully installed

Old tower PC Edition Windows 10 Home Version 22H2 Installed on 11/12/2020 OS Build 19045.7725

Gateway Processor Intel(R) Core(TM) i7-3770 CPU @ 3.40GHz 3.40 GHz Installed RAM 16.0 GB (15.8 GB usable) Storage 4 GB HDD ST4000NC001, 932 GB HDD ST1000DM003-9YN162, 1.82 TB HDD Hitachi HUA722020ALA331, 117 GB SSD SanDisk SDSSDP128G, 7.28 TB HDD ST8000DM004-2CX188 Graphics Card Intel(R) HD Graphics 4000 (96 MB) Device ID C6B6F480-ED70-4787-A153-1FD620BAFDA9 Product ID 00326-10000-00000-AA675 System Type 64-bit operating system, x64-based processor Pen and touch No pen or touch input is available for this display

I see a "Thunderbird ESR" notice appears when I open my laptop. I searched to see what it means. I'm still confused. 1) where did it come from? 2) is it best for me? I am a senior not interested in lots of changes (except improvements), but I am not an organization. Should I do anything or just leave it?

Suzanne

Hi! I'm hoping you can help me! I use Thunderbird, and have for many years, and I love it. My computer is on its last legs, and I'm trying to save up for a new one, but, yesterday I did something possibly stupid... (yeah, I know, you NEVER get people asking for help who've done stupid things, so this will be unusual... lol). Anyway... I turned my computer on and got a popup saying that my Thunderbird needs an update and it's been a while since I updated, so I hit OK on the update... Well, my arsehole of a computer chose that exact minute to shit itself and die. When I tried restarting it, my Thunderbird no longer works. Now I have a popup with a big red X that says "The installation seems to be corrupt. Please check your hardware and disk setup and/or re-install." Can you help me? I desperately need to check my email and have one I need to send. I don't know what to do. I've also got YEARS worth of emails sitting in the system, so I can't risk losing them, either. Please help. L.

On 28 August I received a blank email with just the sender and subject showing. Since then I have sporadically received completely blank emails, with no sender or subject, while others are arriving as normal. The same is happening when I open Thunderbird on my mobile, but not on my laptop which has an older version installed. It would seem that the issue is caused by update 153.1.1esr, as that was released on 28 Aug.

Can I revert to a previous version of Thunderbird or is there another way to fix this, thanks.

I have resurrected a PPC ( 32bit) Mac G5 to Ubuntu 14.04, the installed foxfire version is 28.0, canonical 1.0.

I can not access the internet, as expected, due to an unsure connection.  

Is there a way for me to upgrade foxfire? Can I fix the secure connection issue and use still https? Is there a dependence that is needed? What do you suggest? thxs Mart

https://www.firefox.com/en-US/whatsnew/155/?oldversion=154.0.1&utm_medium=firefox-desktop&utm_source=update&utm_campaign=155

This morning Thunderbird asked me to update which I duly did. Once done all messages started disappearing from inbox. Eventually I found them and moved them back to inbox only for it to happen again

Have now tried 3 times, same result, every single email from Inbox keeps being moved to deleted in Local Folders

All new emails that have come in since appear for a micro second in Inbox before being moved to Deleted

This is obviously not a great situation to put it mildly and as it has never happened before and started straight after this morning's update I can only assume that the update is to blame

Any help would be greatly appreciated

Brenton, GPS Imports Team

It is not a problem, but I would like to know why did my Firefox app (phone) change its logo and name to "Firefox Preview". Was it me that accidentally activated it?

Thanks!

This was mistakenly posted in the Firefox stream. Amended with apologies.

The latest Snap update on my Kubuntu laptop is marked as a BETA version. I haven't selected the BETA stream, and I checked and snap seems to be pointed at the stable version.

I like to keep track of changes at each install and there's no Release Notes available.

Is this an error at your end or do I need to change something to get back to a stable version?

Hi all,

We use a service integration in our organization that only works in the latest ESR version of Firefox (140.14). The latest regular release breaks our integration due to added security policies preventing the software from communicating with Windows services.

After installing the ESR version and disabling auto updates in the settings and adding the DisableAppUpdate registry key, the software still keeps updating to 154 (not the ESR version). I've also chosen to not install the Mozilla Maintenance service when installing the ESR version. I can't seem to find any support articles of people having the same issue. Is there something I may be missing? Any help would be greatly appreciated.

Since May 21st, I am now on Firefox installer 15. That's a lot of interruptions in three months. Can you please explain? Not that it's difficult or time consuming now that I readily understand, just happens when I have least time! Also means I have to open Chrome, which seems perverse. Thank you.

When I download an update and restart firefox, it opens a https://www.firefox.com/en-US/whatsnew/ tab. I want it to not do this.

My start menu is multi-level and sorted. The latest Firefox (154.0) adds a NEW start menu entry for itself at the "programs" level when launched even though it is already entered at a sub-level. This is a NEW problem since earlier versions did not do this. How can I stop this since it confuses and messes up my start menu. OS - Windows 10 with current patches. Using "Classic Menu" to provide better support for multi-level menus.