Thunderbird Community Forum

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.

I've always experience occasional TB crashes. According to my log history there was 1 in July, 3 in Aug, 2 in Sep, 2 in Oct, and 6 in Nov. I never really paid attention since the reboot was quick. But now in December I am losing work and it is a major problem. I've had 30 crashes in Dec and 21 in the past week. I have only 3 add ons and they have not changed, and a Copernic connector. I disable the Copernic connector and it didn't help. I have the same 140.6 on my Surface Go with the same add ons, except for Copernic and it runs fine. On both PCs I use Malewarebytes and WinDef. I have put exclusions for them in their setups. Even with MBAM completely disabled I've still had crashes.

I cleared the Cache and no help. I've even had occasional crashes in Troubleshooting mode. Here are my last 5 crash IDs

bp-070bf941-4e8b-41a3-8b84-3e3440251224 bp-a936f7c2-9ee3-4c38-b304-dab830251224 bp-8be9cf9e-8f2f-49bb-95cf-47e780251224 bp-12f8fc2c-c505-40f0-8c67-44b730251224 bp-9013fb78-086c-4327-9de8-62db30251223

Interestingly I’m also experiencing crashes with Firefox, especially ChatGPT. I cleared the ChatGPT history and that helped but did not solve the problem. I cleared the Firefox cache and in troubleshoot mode still have issues.

Otherwise my win11 PC seems to be working fine. I’ve run chkdsk and all is ok. Also scannow is ok.

Is my next step a profile rebuild?

Bonjour,

J'envoie, depuis une mailing liste d'OVH, un mail présentant l'aspect suivant : une image encadrée (cf: PJ) Lorsque je le réceptionne avec Thunderbird, seule l'image apparait (cf: PJ)

Le code source de cette dernière montre que le code html du cadrage est présent. Un réglage bloque la lecture de l'html ?

Que se passe-t-il ? Merci de votre aide.

This has happened to me twice now. I do not delete emails from purchases until the item is received. I leave it in my inbox and often will mark it unread. I went into it yesterday to check to see when I should receive a certain item and the email is gone. I have looked in all folders (spam, trash, archive, all mail) and it is not there. I blamed G-mail originally but now wonder if it is Thunderbird and if there is some way to retrieve it. Is there a defunct setting somewhere that I do not know about or understand? I have plenty of storage. Can someone answer this for me?

Hello from France,

Copying Thunderbird .eml messages to a USB drive formatted as FAT32

ASUS PC, Windows 11

Directly copying a Thunderbird message via "More" > "Save As" to the USB drive works normally.

However, if I try to copy the same message that was previously copied to any folder on my ASUS Windows 11 PC, I get an error message that says:

“This file has properties that cannot be copied to the new location “

Please help me resolve this issue.

Have a good day.

Hallo,

ich komme seit Sonntag nicht mehr an meine Mails. Kein Abruf möglich obwohl richtges Passwort eingegeben wurde.

[edited]@alice-dsl.net

diese Adresse benutze ich schon seit über 20 Jahren.

Bitte dringen um Hilfe.

Mit freundlichen Grüßen Thomas Höppner

I recently installed Thunderbird on Debian 13 and I wanted to use it as my default email client. I tried to connect it to my university account and even though I'm confident the credentials are correct I'm getting the "Unable to log in at server" error. I also want to note that I'm getting the success message saying "Configuration found at email provider".

Hello,

My father has a random issue with one of his email accounts. Context: Windows 11, TB 146.0.1. In TB, 5 mail accounts are configured, all IMAP, on 4 different providers.

All accounts work perfectly except the first one, which is also the default account. This account and the second account are both on my father's Internet provider. The configurations of both accounts seem identical (I checked more than once), except obviously for the name and password. On the first account (which is unfortunately the one my father uses most), connexion is often refused, and TB then asks to retry or enter a new password. Retry and reentering the password fail to solve the issue. When the connection to the first account fails, the second account (for the same provider) always works. Some time later (usually at least several days later), the first account will work again, without any obvious reason.

I tried exiting TB as well as clearing the cache, rebooting the computer, scanning for viruses, with no result.

I'd rather avoid re-creating the account in TB as this would change the order of the accounts, and my father (94 years old) might have difficulties to adapt to the change, but is someone can tell me how to recreate the account without changing the order, I am ready to try it.

I have a log of what happens when using only the "bad" account, and one for the good account from the same provider, but I don't know how to share them here. While creating the logs, I checked that if I set the second account as default (the first account having the issue before as well as after this), it still manages to connect. But of course, maybe the second account would have also had a connection issue later...

Does someone have any explanation, or ideas about how to solve this issue?

Starting in mid November 2025, my subfolder - named Apps, disappeared from my folder structure. I've used this for many years without an incident. It remains on my structure when I open my email via a web browser, but is absent from Thunderbird.

What changed? Is there something now forbidden about the name?

As I have message filters created to sort all my emails, it is a real problem now with Thunderbird. I would be grateful if someone can enlighten me on how to solve this issue. Jerry

The Global Search feature is okay (when it works). Problem is that it doesn't work reliably. For example, I have a plain text email in my inbox from a few days ago with some content in the message body "view your paycheck". Just a random example. I would expect this message to show up in the global search results when I type in the phrase "view your paycheck". It does not.

If I use the classic search function "Search Messages" (which as far as I can tell is only accessible by right clicking on an account or folder), the results are as expected.

I've already tried repairing the folder or deleting the database file. Those are workarounds that treat the symptom, but don't cure the problem permanently. It may 'solve' the issue for a while, but the problem always returns. I can't trust the Global Search results.

On the other hand, the classic search is flawless. It's even more reliable now that I have IMAP server doing service side indexing with Apache Solr.

My question is, can we have the Global Search configured to instead send the query to the server just like the option currently present in classic search?

Or at the very least, make an option so that classic search is a first class citizen instead of the global search.

Having been using Thunderbird for over 25 years, I have some folders with very old mail which I am unlikely to ever want to access, but don't want to throw away. And, I am in a space crunch. Would it be reasonable to zip the contents of appropriate mail folders, store those elsewhere, then clear out the folder. Then, I could unzip to restore if needed.

Ideas?

Why are older emails disappearing from the Inbox? It didn't do this when I was using Windows 7SP1. Now I have Windows 11 and it seems the Oct and Nov emails I had have disappeared. Only Dec emails are in the Inbox.

Oct 23, 2025, 19:35 CST

I FINALLY was able to find the original profile, all messages in the In Box, plus all folders with their contents. 'Lost' when our ISP's ' tech support person ' had me close/remove the TB POP3 account and create an IMAP account).

I need to merge the new small profile (In Box & with basic folders) into - onto the BIG, original, profile. So each time I get/check mail everything goes to, ends up in, the Thunderbird account containing all the OLD data and new working account.

Please remember I am barely TB literate, so start at 1 (A), not 27 (Z)& no tech words. Nor acronyms please.

Thanks! Remain in GOOD health, be WELL, 'n be

• • SAFE!**

Robin

Have TB on my laptop (146.0.1 (64-bit) on Win11) all set up the way I want it. Would like to "clone" those settings/profiles to my desktop. AI site said, "Copy profiles folder and profiles.ini to the new machine." Didn't work. Asking me to set up from scratch. Laptop is on "standard" edition, think desktop is on beta. Is that the problem? What do I need to do?

I'm using Thunderbird 140.6.0esr under 64-bit LMDE (Linux Mint Debian Edition) v6.0, fully up to date with patches.

Last night, Thunderbird was working justfine when I switched the PC off. This morning, when I try to collect mail, I get a dialog box with the message

Unable to write the e-mail to the mailbox. Make sure the file system allows you write privileges and you have enough disk space to copy the mailbox.

I have multiple Terabytes free on the drive, and I have gone through a full file listing and checked all the file attributes. Yes, I have write access.

Just to be sure, I ran a chown against the entire ~/thunderbird directory (~/.thunderbird is a logical link) so I own ~/thunderbird and everything beneath.

I also ran a fsck on the drive, and fsck gave it a clean bill of health - no errors reported. This was just a normal fsck, not including a badblocks check, although I did run badblocks against the drive when I got it new, about two months ago.

I am out of ideas. I suppose I could try running TB with a sudo, but I'm not really happy with doing that routinely.

Does anybody have any ideas? . Thanks,

Brian.

Not a huge problem, but VERY FRUSTRATING! After years of reliable performance, my personalized incoming mail notification sound (wav format) suddenly stopped playing. The 'test' function in settings works fine, but NOTHING happens when actually downloading messages. I've tried EVERY possible FIX, but NO LUCK. Any suggestions? Thanks