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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 just finished using my printer. When I came back to print something else, it wouldn't print. Got this error code.

The page isn’t redirecting properly Firefox has detected that the server is redirecting the request for this address in a way that will never be completed.

This problem can sometimes be caused by disabling or refusing to accept cookies.

I did what it said: checked the connections, etc. I even changed out the printer with another one. Same problem.

In paying my Illinois tax bills i tried to get a print out of my payment confirmation but the site said that this browser blocked my printing, as popups are blocked for their site from your browser

Hello,

Scrolling vertically with mouse-wheel in Thunderbird is uneven and unstable, while scrolling in Firefox* is perfect. (*or any other program) What could be wrong?

Thanks, Mark

Ich habe ein neues Thunderbird-Profil erstellt, danach Thunderbird gestartet aus der Profilverwaltung, dann erscheint die Maske zur Eingabe der Zugangsdaten der E-Mail-Adresse. Die eingegebenen Daten sind richtig, es erscheint jedoch die Fehlermeldung: Anmeldung auf dem Server fehlgeschlagen,eventuell sind Konfiguration, Benutzername oder Passwort nicht korrekt. Wie soll weiter vorgegangen werden??

How do I fix spotify images being grey? when I'm not logged in I can see he images of albums but whenever I log in they turn grey and I can't see the album/song image. Is there any way to fix this? I added a image for some context if that helps :) it's how the greyed out songs look.

I am trying to import a backup of my gmail using using ImportExportTools.

What does this error message mean? Is there a corrupt email in my gmail? If so how can I find and delete it so I can complete the import, I think it was close to finishing.

2nd question.... After clicking OK on the error message I can select the local folder it was importing and I can see it is then downloading a range of messages with mention of their labels in the bottom of the window but the labels are not creating folders. Should I expect it to do that?

[Exception... "Component returned failure code: 0x80550005 [nsIMsgFolder.msgDatabase]" nsresult: "0x80550005 (<unknown>)" location: "JS frame :: resource://mboximport/content/mboximport/modules/mboxImportExport.mjs?14.1.7 :: rebuildSummary :: line 706" data: no]

rebuildSummary@resource://mboximport/content/mboximport/modules/mboxImportExport.mjs?14.1.7:706:5 _importMboxFile@resource://mboximport/content/mboximport/modules/mboxImportExport.mjs?14.1.7:415:16

Whenever I want to print an email the print preview doesn't show, it keeps displaying a spinning wheel. Printing also doesn't work (as in, I press Save, enter a filename and press Save; the dialog closes but no file is generated).

I already tried the Troubleshooting information -> Clear saved print settings, but to no avail.

Browser console screenshot attached. I'm using Fedora 41 and Thunderbird 128.11.0esr (flatpak).

I have sound in Windows, but YouTube is dead quit. I have tried all that is suggested in Firefox help and some YouTube sites. Nothing worked. I have tried off the computer and restarted, but no change. My system is Windows 11, sound works, and the latest Firefox update installed. Question is this a YouTube tacit to stop NoScript and uBlock?

I'm using the vertical tabs feature. I also tried enabling the "Expand sidebar on hover" option, which minimizes the side bar, and only expands it when you hover on it.

Issue: I have a lot of open tabs, and I'm usually working with the ones at the bottom of the list. When the bar minimizes the scroll position resets back to the beginning. So, every time I want to select a tab, I have to scroll back down, which makes this feature very hard to use.

Expected behavior: After the vertical bar minimizes, and I hover again, it should keep the scroll position.

Hello, using Windows Version 22H2 (Build 19045.5965), Firefox 139.0.4, Thunderbird 139.0.2, I can drag multiple emails from Thunderbird but not drop them into Firefox (the stop symbol appears and does not let me finish the action). However, dragging and dropping single emails does work. Firefox does not understand the imap address but the drop is registered which is all that is relevant to me. Is this a bug/missing feature in Firefox or a problem with Thunderbird and Firefox on Windows? Or is there a way to do it by simply adjusting (preferrably very few) settings? Dragging and dropping multiple emails using Thunderbird and Firefox on Linux Mint works fine. Dragging and dropping multiple emails from the Windows Explorer to Firefox also works fine. In testing, the issue only arose using Thunderbird + Firefox, Chromium-based browsers also worked fine with Thunderbird. If this is the wrong forum to ask such a question because this should rather be in a bug tracker or something similar, please let me know. If this should be on the Thunderbird thread instead of Firefox, also let me know. Thank you for your help.

Hi,

I'm on a fresh Windows and the CPU usage is waaaaay too big. When TB is out of focus, it uses about 10% of my CPU. This can go up to 15% when the window is active. It's not doing anything, not downloading or compacting or anything.

Thanks !

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