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I exported my profile to an external drive, then reset my Windows 11 PC. The resulting file is a zip file. When I import, the import starts, then stalls and gives an error. The error log is incomprehensible to me. How can I not lose my local folders and messages? I tried unzipping and importing that folder, but another error. I need help! Ideas? Thanks.

Image of the error attached.

I am now getting a spinning wheel with annoying frequency while using/trying to use Thunderbird on my MacBook Air 2017 running Monterey. Everything was fine for the first 6-9 months, but over recent months the spinning wheel has appeared more and more frequently while I'm trying to read mail, answer mail, scroll through messages, etc., etc. Now it comes up every few minutes and delays me doing anything for about 15-30 seconds at a time. It's really frustrating. I recently ran Onyx, which was designed to clear cache, etc and make everything run smoothly. But the only program it required me to quit before it started was Thunderbird. Is there some cache or something I need to clear on a (semi-) regular basis to keep it working at a reasonable speed without this godforsaken spinning wheel interrupting everything? Thanks for any/all your help.

I'm running Sequoia 15.1.1 on an M1 Mac Mini. Never had problems before. TB 128.6 0 esr.

As soon as it opens it crashes.

I have a lot of unopened files in a pop mailbox, going to try and remove them.

It seems to still work on my iPhone. Any ideas?

I M get this working. I'm in a panic. Please help.

Aloha, I have been using Thunderbird since decades. Since a few weeks (or even months) by now, it is hanging all the time. Meanwhile it is totally impossible to use it properly. Whenever I klick on something it hangs itself up and I have to wait at least a minute until I can click something else and then it hangs again.

I already tried reinstalling, but that didnt change anything. Of course I also rebooted the computer.

Why is that so and what can be done?

Mahalo, Stefanie

I asked bout this a couple of weeks ago but didn't get a response. Perhaps I asked under the wrong heading. I'm not the sharpest tack in the box when it comes to these things. Over the holidays I prepared many emails to send afterwards. I created sub-folders in my drafts folder. I sent the emails OK, but then I couldn't delete the folders I created in the drafts folder. Not only that but the folder icons in Drafts turned from yellow to purple and they did that in all four of my email accounts, even though my storage of emails was all in one single account. When I right click on the folders I don't get the option to delete and the folders won't allow being dragged to trash. Also one of the folders suddenly disappeared with all of the prepared email in it. Can you help me correct this condition? Thanks.

Dear Thunderbird:

I have used Thunderbird for years. I click on Attach to add images to my email. To check the attachments, I would double click on each one and it would open in my Microsoft Photo Viewer for Windows. However, now instead of opening the image, I get Adobe Acrobat Reader Home page and no image.

Has something changed in Thunderbird ? Or is there a simple setting I can change with your coaching ?

Thank you for your help.

Pip Spaull

In the last few days, after some minutes of usage, parts of Firefox become unclickable:

- I can still click on tabs to change tabs. - When hovering over the cross button to close a tab, it changes appearance as it should. Clicking the button does nothing. Ctrl+w still closes the button. - Clicking on the address bar does nothing. - Cannot click on back, forward, refresh buttons. - Cannot click on any add-ons. - Cannot click on preferences. - Can click on the button to open a new tab. There, I can enter an address. Once the page has loaded, address bar becomes unclickable again. - Bookmarks toolbar is still working as expected. - Keyboard shortcuts (ctrl+t, ctrl-w, ctrl-l) still work as expected.

I'm running ``` Mozilla Firefox 138.0 20250428130755 20250428130755 ```

on Manjaro 25.0.1 with GNOME 48

I exported Outlook Contacts to a .csv file and imported giberish to the Thunderbird Personal Address book. Can the giberish be block deleted? How should the Outlook Contacts be transferred to Thunderbird? Secondly, I exported Outlook Contacts to gmail and have used them on the web based gmail app to send messages. Don't remeber how the gmail contacts got to the Thunderbird Address book, but they don't work. The first message I sent from Thunderbird from my wife's gmail address to my hotmail address produced the following error:

Sending of the message failed. An error occurred while sending mail. The mail server responded: The recipient address <Steve Thompson (sthompson2486@hotmail.com> is not a valid RFC 5321 address. For more information, go to

https://support.google.com/a/answer/3221692 and review RFC 5321

specifications. 00721157ae682-70ca8508772sm13401897b3.82 - gsmtp. Please check the message recipient ""Steve Thompson (sthompson2486"@hotmail.com" and try again.

Both imported address books are unuseable. Please help.

Attachment is a screenshot shows task manger shows there are 64 open files open, when I have only 4 windows open. What would causing this?

Over night Firefox closes and close all my open windows. I need the windows remain open.

Thank you for sharing your wisdom with me.

Thunderbird is not synchronizing with Mailfence. My other email accounts (Outlook, Gmail) work fine. TB connects to them, downloads message headers and displays the number of messages correctly. With Mailfence, the messages stop at "connected to imap.mailfence.com" and stalls there. The message disappears after a few seconds and nothing else happens. This happened this morning when I first launched TB. I then got an update to 128.11.1. No change. I did receive the Windows Update 2025-06 Cumulative Update sometime overnight prior to launching TB.

I've tried Troubleshooting Mode but it only recommends "Clear Startup Cache" and when I click it to reboot the program Thunderbird stills fails to load the Inbox file and Troubleshooting Mode again recommends the same "Clear Startup Cache" as a remedy. Not sure what to do to get Inbox file loaded in program. BTW the program does download new emails to the Inbox file but program is unable to load the file. During Thunderbird program restart the message at the bottom left of Thunderbird window is "Summarizing files for Inbox" which after 20 minutes program crashes ans asks for a reboot. Any corrective action recommendations is appreciated.

Thanks, Mike

I have no idea why, but TB is wonking out lately with strange errors?

The folder '[Gmail]/Sent Mail on me@mydomain.com' could not be compacted because writing to folder failed. Verify that you have enough disk space, and that you have write privileges to the file system, then try again.

I have a ton of space and have not changed anything on the PC?

Any ideas?

сегодня столкнулся с проблемой, что не могу создать учетную запись, используя домены от mail.ru. на скриншоте показал результат моих действий: я как обычно ввел почту, поставил пароль, заранее в самой mail почте разрешил использование imap, а когда нажал готово и разрешил доступ в самом thundebird, то окошко с входом просто закрывается и пишет "не могу войти на сервер", хотя я даже не ввел пароль. это происходит со всеми доменами типо inbox и т.д, с gmail все работает нормально. помогите пожалуйста

How do I save my open tabs while compacting my inbox? They all disappear after compacting. I am trying to move my open tabs over to a different folder to preserve them, but I can't figure out how to do it.

When I choose an open tab from my Inbox to move it to a different folder, the folder choices on the left side of the interface go away. I there a way to move between folders? Drag /drop?

Chris

Hello,

I habe been using Thunderbird for many years and I always considered it was a wonderfull software. But it seems that since Thunderbird revisions 128 replaced revisions 115 XXX, this software became less performant and less reliable than before: very (too) often it takes a big time just to open a received e-mail, it is longer and longer to send a new e-mail, even without attached file. Sometimes the software seems locked: nearly all commands are unavailable, in a "grey" state: "the program does not respond ..."

Somtimes, when you run Thunderbitd you see a huge disc activity, as if the software was re-indexing the databases after each launch.

Even if you re-install the software, from scratch, and you re-index all the files the behaviour does not improve.

Theses problems have begun since revision 115 XX was upgraded to 128. We have been told that Thunderbird sofware had been widely "redesigned" but as a result, right now, it is less good than before.

Looking on forums I see that I am not the only one to signal these problems ...

Can you give us some more informations about what is going on with Thunderbird ? It is going to be "stabilized" ? Does this last major evolution of Thunderbird is going to arrive to a more stable state ?

Thank you by advance.

Regards

Recently, whenever I go to a website that has some info/links/UI that should be locked to the bottom of the screen, it instead shows up and inch or so above the bottom. So I was part of the website on top, the a floating info bar, then a tiny amount of website at the bottom. I have included an image to show what I mean, but some websites have even bigger bars that cover more of the screen. When I scroll up and down the website this floating bar remains at the same location on the screen, just about an inch up from the bottom.

Is there a way to fix this?

Every time I run Thunderbird, it appears to lose its IMAP connection(s) after 10-15 minutes. I've tried varying the number of cached connections from 1 to 10 with no difference in behavior.

Restarting Thunderbird will restore connectivity temporarily, until the entire process starts over again.

It seems to be correlated to saving a copy of sent messages. The sending process times out while the message is being saved to the Sent folder after the SMTP sending is complete.

Once this happens, new mail doesn't appear, moving mail between folders has no effect, and some (but not all) messages can't be retrieved from the server.

I can start Thunderbird but it always crashes very shortly after startup (within about 30 seconds). Here is a crash report:

bp-e6e2f348-5338-458f-a03e-c03b70241224

I have started TB in safe mode, started Windows in safe mode, reinstalled, tried clearing startup cache. Nothing is working. Thanks for your help,