Thunderbird Community Forum

The attached image shows the error message I get when I try to run Thunderbird. This has been the case for several months, and all of the suggestions I've found online have failed to make any difference at all.

It seems this must be a fairly common error with other software, but within Mozilla's help menus I could find only one thread of two messages that addressed it at all, with no solution offered.

I'm running Windows 11, and have had no problems with Thunderbird until this one.

I hope someone can offer a solution that works for me.

Thanks,

Neil Farrell

Changed hotmail password, now confronted by oauth2 "enter credentials" window. This is blank, no further action occurs, no information can entered into it. Windows 11, TB 137.0.2, cookies accepted, javascript on.

I am trying to Login to Gmail. I keep getting the message "server imap.gmail.com with username xxxx@gmail.com failed."and options Retry, EnterNew Password, Cancel I've entered New Password numerous times.

Also, previously when I used Thunderbird with the same account, Thunderbird did recreate the same folder structures/folders as I have setup in Gmail. How do I sync the folder and files to be the same?

Thunderbird does correctly mark emails I choose as spam spam. Problem is, TB fails to move these marked-as-spam emails to the selected spam folder. I've searched for cures here but nothing helps. Now what Mozilla??? See attached pics...

It seems that the mobile app works well on my phone, but it doesn't have the calendar function.

How do people get by in this situation? Do you somehow sync the calendar on your phone with this? Note, I do have an Android device.

Thanks!

W11 rig. TB updated today to 138.0.1 (64bit). All message on inbox show up ok, but all messages on the local folders are blank.

But I can access all email in all folder from my W10 rig which is running 128.9.1 esr so I know the msr files etc are not corrupted. This is only happening on the w11 rig

Repair approach makes no difference when tried through the w11 rig. Have rebooted w11 computer, reloaded TB several times. No change.

Need suggestions to get the W11 rig working with all messages. Thanks

I installed Thunderbird 138.0.1 (64-bit) on a Win 11 desktop computer yesterday and the column headers for the messages are not displayed. I have View/Headers/All, View/Layout/ Classic View, Folder Pane, Message List Header selected. How can I get access to the message column headers to display them and later select the ones I want ?

Thanks, Corey

I've been using Thunderbird for years. It connects to my gmail account using POP. I'm on a Windows computer using Windows 11 and Thunderbird says it's up to date with version 128.10.1esr.

For the past couple of weeks my Sent folder has been empty. Emails are sent successfully, they're just not stored.

I have searched for solutions but they all seem to deal with IMAP, not POP. I have found the folder (appdata\profiles etc) where the sent file exists, and it's there and very big. I tried copying it to a new name ("sent2") and asking Tbird to store sent messages there but it's still empty and not saving messages. I also tried deleting the sent.msf file and that didn't help either.

Any thoughts?

Hello, every time I want to send or accept a message Thunderbird keeps asking me to enter my password. This is very irritating, although I activated the option 'Remember password' during the set up of my mail address. Can you help me with this? Thanks.

When I receive an email documenting an online purchase, it is my habit to print the page that tells the amount of the purchase and the vendor; I use the printed pages to keep my credit card up to date.

This has worked very well for many years. But now all of a sudden, sometimes Thunderbird imposes a rather long delay when preparing the "print preview" prior to printing the page. It's inconsistent; sometimes the page preview shows up instantly and sometimes it is a matter of many seconds. I have made no change to the printer or its connection (although Epson does from time to time issue updates to their drivers). No other application on my computer - not even Firefox - seems to suffer this delay; only Thunderbird.

This is with Thunderbird version 128.10.1esr, as well as with the previous 128.10.0esr

My calendar reminders in the reminder window time out and disappear after a month. I want to keep them indefinitely and dismiss them myself manually. How can I do that?

I am long time user of Thunderbird and currently using version 128.10. I am having trouble downloading and sending email either from Gmail or from my MS Exchange account as of late (May 2025). Email sometimes selectively downloads but I am no longer able to send email either through my Gmail of MS Exchange accounts as both the Gmail and exchange SMTP servers time out. This problem started with the previous versions of Thunderbird circa Nov/Dec 2024. A Thunderbird or Windows update resolves the problem for a short time but then the problem it reoccurs. Server settings are all correct and have been checked multiple times. I've deactivated Norton AV and firewalls, added and/or verified port exceptions but to no effect. This problems has resulted in many overlooked important emails until they've been double checked on webmail portal. Is trouble sending and receiving emails a broader issue with Thunderbird users and are Google and Microsoft deliberately making it difficult to use Thunderbird as an email client? I've seen older posts dating to 2023 reporting similar problems and I'm surprised that without changing anything on my end that this problem suddenly popped up. Any suggestions on how to resolve?

Just installed Thunderbird on a new computer. I'm a long-time user, supporter, donator to the team. I just donated again. Now I get an "in your face attempt for donations" that I don't appreciate. It has to be removed every time I load mail. How do I get rid of this?

Witam wszystkich. Podczas odbierania wiadomości mam następujący komunikat "Zapisywanie wiadomości w skrzynce pocztowej się nie powiodło. Sprawdź, czy masz wymagane prawa zapisu w systemie oraz czy dostępna jest wystarczająca ilość wolnego miejsca do skopiowania skrzynki pocztowej." Wszystko posprawdzałem i nie mogę sobie dać rady. Wiadomości z innych kont są zapisywane. Poproszę o wskazówki gdzie szukać błędu.

I can send mail via thunderbird but now will not get it from earthlink server? tried restarting app, computer and router, no help. My mail is in my web mail but not thunderbird

I had trouble during the installation of Thunderbird, it would not connect to my email account with Xfinity. However, I could connect via the web.

Finally, I tried the manual route and there (accepting all given entries) I was able to connect with Xfinity just fine. I hope this helps others. I think there may be a bug in the installation process.