Форум сообщества Thunderbird

I saw where there was a same problem liste a couple of months ago but the solution did nto work. As of this morning I can no longer send with my CompuServe Account. There was no change in my settings, and I have had the account in place with Thunderbird for years. I get an error to enter my password again, I do, then no luck. It asks again. When I cancel, I get an alert, sending of the message failed, Unable to authenticate Outgoing Server (SMTP), please check the password and verify the "Authentication method" in "Account Settings|Outgoing Server (SMTP)

I tried change the password authentication from normal to OAuth2. No luck.

No problem with downloading messages; they all come through.

I saved the message to be sent in my Draft Folder and then when going to the web version of CompuServe (really AOL and really Yahoo), my message is saved in the Draft Folder and I can then send it.

Thank you in advance.

Sal

I am getting an error for an outdated certificate on my mail smtp server and when I try to add a security exception Thunderbird does absolutely nothing when i click the button to add a security exception where I can send mail. I end up having to cancel the window and discard my email. It will also not go view the certificate and if you ask it to check it just hangs up forever in and endless loop of checking.

I have used Thunderbird for many years and have over 11 years of emails on my Linux laptop. I'm moving to a Chromebook and have installed Thunderbird on it. It is working fine. I only want to transferr about a years emails to my new machine so the "folder transfer " mention is not good. I have tried the import / export method but every time I select a group of emails of about a year the resultant zip file is about 10 gbyts and the import will not work. Thank you for any assistance you may give

Paul

Won't connect to Host Server. The error notification window won't allow me to get back to the app to check settings. The only option given is "Try Again". I don't know why it all of a sudden won't connect, because my iPhone connects just fine

Thunderbird 145.0 (64 bit) with Windows 11 Pro.

In the message editor window, new message or reply or forward, when I want to insert a hyperlink using either CTRL+K or via the Insert menu, a popup window to insert the link into does not appear, and the write windows hangs. Becomes unresponsive. The only way to close it is by ending the task in Task Manager. I notice a crash helper in the Thunderbird group in Task Manager. Everything is on 0% CPU though.

What went on before this is that I modified the property editor.link_color in the config editor (because links are not readable in dark mode, but that's a different story). I then did reset it to default and restarted TB, then pc and TB, that did not help.

In troubleshooting mode, there is no problem. In normal mode, I deleted the only plugin I had (a theme) I cleared cache, refreshed Thunderbird, to no avail. It's not set up to generate crash reports yet.

I have TB on another machine (W10 Pro), I can copy my profile folder over quite easily.

Any suggestions please?

(I'm on Central European time, it may be a day or so before I respond to replies from the US.)

I'm on 140.5.0esr version of Thunderbird (up to date). Been a loyal user for a long time. As of 11/26/2025, I have been unable to collect my email from the portal server. I'm able to send but cannot download new messages from the server mail manager. I've reviewed the settings with the portal managers and all looks good on their end. They suggest connecting with my email client provider to find a resolution. I'm on a MacBook Pro, Sonoma 14.7.4. Can anyone help?

I recently switched to a new monitor. When I hover over a picture, or the subject of an email in my email program, I get a display of the alt tag. The print is too small. How do I enlarge the display of the alt tag?

Thunderbird is not working with mitchells new version. I am getting a MAPI.Send() returned -2147467259. How do you correct this? Mitchell is saying it on your end.’ for ‘Thunderbird’

After many years of using Thunderbird with an AOL account I changed my password in AOL to increase the security. So I had to install the AOL account again in Thunderbird. I created an app password in AOL and put it in Thunderbird. Everythin fine so far. AOL login window opens automatically. But after login to AOL the message "somthing went wrong" and "try on anther device" pops up. I tried it on several PC's - no way. Other mail clients like Mailspring oder Mailbird did work with the AOL account. What is the problem?

Hi

I'm using Thunderbird 140.5 on a desktop Mac running Sequoia 15.7.2

In Local Folders, my subfolders have subfolders. In both levels of subfolders, Thunderbird has spontaneously started disordering both newly created subfolders, and folders which I move from one subfolder to another using right click 'Move To'

Up until ten days ago, all folders whether new or moved, were listed alphabetically. Now, day by day, the disordering is getting worse and as someone with ongoing conversations with hundreds of clients, it is becoming impossible to work when I have to give so much time to slowly scanning through every folder looking for the relevant subfolder.

I don't know why I can't update this version, but I tried installing the newest version available (145) and used the 'reset folder option' which did not work either.

Also, setting up a whole new account instead of upgrading my existing account is a colossal faff and I'd rather not have to!

Aside from manually reordering (also a colossal faff), can anyone suggest something I might be missing in stopping this happening?

Thunderbird says I'm on an esr channel, if that helps

Thanks

I have switch to Linux Mint. My laptop with window 10 cannot go to Window 11. I therefore am retiring this laptop and gone to Linux Mint on a Mac machine. I have Thunderbird as my email. I have not been successful sending my emails to this new system. I downloaded Thunderbird on the new machine but cannot get my emails

I just created a new email account in Thunderbird. I've used T-bird for 15 years. Normally, when I highlight an inbox email and then press the keyboard "Delete" key, the message is sent to Trash. But on this new account, when I press Delete key, the message briefly disappears, but then comes back into my Inbox. It doesn't go to Trash.

I checked the Server setup and confirmed it is setup to move Deleted email to "Trash on xxx@xxxx.com"

I must have changed something because T'Bird no longer starts. I was trying to copy TB file from Win 10 to a Win 11 PC. That failed because some files could not be copied. But now TB is not starting up. I checked the Start folder and it is in there.

Suggestions please.

Hello! Since a recent Thunderbird update (I think 13th Nov), when clicking on the Thunderbird icon on my taskbar a donation webpage is opened not the application! I went to 'setting>apps&features' but the 'modify' button is greyed-out. How do I change it back (what 'setting' do I need to change)? I really don't want to have to uninstall/reinstall. Regards, Tim

I have been using Thunderbird for 20+ years and am on the latest version, but trying to eliminate what I believe to be old files from legacy versions that have been left behind. I don't want to delete anything and break Thunderbird, but wondered if these files were redundant:

abook.v2.sqlite + abook.v3.sqlite

These haven't changed since 2021 & 2022 apparently.

Also, I have a lot of address books (I find using addresses in a given address book excellent for email filters). Are abook-1.sqlite, abook-2.sqlite etc my individual address books?

If so, how can I tell which file belongs to which address book?

I also have v2 and v3 files (eg: abook-1.v2.sqlite) for most of these.

Hopefully this makes sense. Thanks in advance for any help.

Hello,

I created an event in the Thunderbird calendar, inluded 30 e-mail addresses of which only 19 calendar invites were sent. It sent the invites in the order of the recipient list and just stopped at number 19..

What could be the problem here?

Thunderbird version 140.5.0esr on Ubuntu.

Hi everyone, I’m facing a very strange issue when trying to authenticate a Hotmail account via Microsoft OAuth2 in Thunderbird (and also in Firefox).

When the Microsoft login popup appears, I **cannot focus the password field or the verification code field**. The focus just cycles through other UI elements (buttons, dots at the bottom right, etc.), but **never stays inside the input field**, so I can’t type anything. Clicking into the field does not help — the focus immediately jumps away again.

This only happens in:

• Thunderbird 128.12.0 ESR (32-bit) on Windows 10
• Firefox (same behavior)

But Edge and Chrome work normally.

What I already tried (no success):

- Removing OAuth tokens and clearing authentication files in Thunderbird - Disabling Enhanced Tracking Protection in Firefox - Disabling browser extensions (ad-blockers, NoScript, Privacy tools) - Checking and modifying Firefox `about:config` privacy settings - Clearing and re-authorizing the app under Microsoft Account permissions - Restarting in Firefox Troubleshooting Mode - Switching temporarily between OAuth2 and Normal Password authentication - Testing on fresh login windows after restarting Thunderbird - Maximizing the popup, using tab/keyboard navigation tricks - Turning off Windows Security controlled folder access - Testing with different networks

None of the above solved the issue.

Additional notes / clues:

• Problem affects only **Thunderbird + Firefox**, not Chromium browsers
• Windows 10 system
• Thunderbird is running **32-bit ESR**, so it uses Gecko/Firefox ESR 115 engine
• This looks like a **focus bug in the Microsoft OAuth WebView implementation** on Gecko-based apps
• I can't complete the OAuth login, so I’m stuck without access to the account

What I’m asking the community:

• Is this a **known ESR bug** with Microsoft OAuth?
• Is there a workaround or patch for Gecko WebView secure input fields?
• Any configuration that I may have missed?

Any help or guidance would be greatly appreciated. Thanks in advance!

Roberto