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There must have been an update for Thunderbird that screwed up the way I have been using Thunderbird for years now. I had sub folders under inbox. For example, I had an investment newsletter go into a sub folder under inbox labelled "inv". I had a filter set up to move emails that had the name of the newsletter in the title to go to that "inv" folder. In this new version of Thunderbird, those separate sub folders are gone. The filters are still there but the folders are gone. Now all emails just go into the inbox. Is there a way to roll back to a previous version?

TIA Eric

Yesterday, I thought I had my original problem with TB fixed by installing v140.5.0. Well, things just got worse.

While trouble shooting it today, it AUTO UPGRADED to v144.0.1.

SYS.INFO: • OS Version: Microsoft Windows 10 Professional (x64) Version 22H2 (build 19045.6218) • Processor: Intel(R) Core(TM) i7-6700T CPU @ 2.80GHz, Intel64 Family 6 Model 94 Stepping 3, CPU Count: 8 • Total Physical RAM: 16 GB • Graphics Card: Intel(R) HD Graphics 530, 1024 MB • Hard Drives: C: 476 GB (361 GB Free); D: 664 GB (483 GB Free); P: 267 GB (80 GB Free); S: 1862 GB (1687 GB Free); T: 1863 GB (1687 GB Free); • Motherboard: HP 829E, ver KBC Version 06.29, s/n PGAXV0QNNB7EO6 • System: HP, ver HPQOEM - 0, s/n 8CG8343NN9 • Antivirus: Windows Defender, Enabled and Updated

• Windows 10 Professional (x64) Version 22H2 (build 19045.6218) • Firefox 142.0.1 (64-bit) • Thunderbird 128.10.1esr (64-bit)

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THE ISSUE: When opening Firefox, (Attachment #1 - below) appears. Seems to have nothing to do with any reality . . . as when I check in SETTINGS (Attachment #2 - below). 1. So, who's telling the truth? 2. How do I stop the popup (Attachment #1) from making it's nagging, inaccurate appearance?

Thank you / Nels

On both my Mac systems, Thunderbird was auto updated to 128.6.1, yet that download is not available anywhere on the Thunderbird sites. Was 128.6.1 released by error?

I didn't know there was a non-ESR version of Thunderbird until I found out by chance a few days ago! Since the latest update to ESR 128.5.2 has crashed 11 times this week, I would like to move to the latest version (64 bit?) non-ESR. There must surely be an official Mozilla step-by-step guide to doing this?

Upon following the instructions to upgrade from the ESR version to the Thunderbird version, I am left with two email accounts that are devoid of messages. Additionally, tabs at the top now have no title or content. Recommendations?

Ever since Version 146 was automatically downloaded, all I see is a blank page and several icons across the top representing individual mail. (See pic attached. Before 146, I saw all my mail listed.) The program freezes; I can't click on any icons. Most of the time I am just waiting for something to load. I have to fight to get my folders to even see my mail. How do I get Version 145 back?

The last version of Thunderbird provides support for logjam patch, which my email service, Spectrum, does not and refuses to support. As I am forced to retain Spectrum, being an apartment service, how can I revert to a prior Thunderbird version that does not support logjam?

I was having massive issues with TB when it auto updated from 142 to 143. Then last week, just when I thought I had everything restored, the damn program auto updated to 144.

I still can not "delete" messages or send anything.

I downgraded to 140.3.1 at least with that version I could delete messages. But I still could not send anything. TB send would time out and a window would pop up asking me to "sign in with my ISP".

And like others that have posted, I too lost folders on the new updates.

This whole series, 14x is a bust IMO.

Can I permanently turn off InformationUpdate available' which appears each time I open Firefox. I must click Dismiss to close it. The problem is that after each update, many services to which I log every day, state that I am logging from a new device and I must complete a time consuming procedure of adding a new device in many places. And I don’t need most of the updates.

My local folders are missing. There is nothing in my profiles to recover from. This is the second time this has happened after a Thunderbird update. Last time the local folder were found in my profile and I was able to restore them, This time there is nothing to restore. Has this happened to other users?

I am currently running Thunderbird 137.0.2 (64-bit) and I don't get an automatic prompt for updates and haven't been getting them since I updated to Supernova and now Nebula.

I have the settings set to Check for updates, but let me choose whether to install them, which is the setting I have always had and I used to get automatic prompts for updates with a window opening to show the details of the update as I get in Firefox.

Can someone tell me how to get these automatic updates back.

I have attached a screenshot of the update window.

Thanks.

Since updating to 141.0 64 bit today (Jul 22, 2025) my addon Filtaquilla is disabled.

I tried another attachment saver and the same thing happened. Okay, I'll revert back to previous version.

Can't do that without starting a new profile.

Sure glad I donated to Thunderbird last night.