Thunderbird Community Forum

I've lost my password, but I believe I have retrieved it from the Profile. The entry reads: "encryptedPassword":"MEIEEPgAAAAAAAAAAAAAAAAAAAEwFAYIKoZIhvcNAwcECOabVSCGHBLGBBiqEqUXu8w7N4eAi09k0ZOIVAcs0chiziM=". Please would you indicate how to decrypt. Promptly upon resolution, I shall obviously change the password using the regular Thunderbird method.

For over a year now, I have had to resort to the Orange.fr e-mail client, which is much less satisfactory. I have used a Demo version of "Passware kit" to seek to retrieve the elusive password, and have received no satisfactory answer from it. I am not prepared to pour good money after bad.

A software solution is only as good as the support the publisher provides for it. Please answer soon.

I emphasise that, as a regular contributor of funds in the past, my continued funding of Mozilla Firefox and Thunderbird depends on your answering with a satisfactory, workable solution to my long-standing plight, contingent upon decryption of the password above.

Adam Warren FRSA [edited from public community support forum] @orange.fr

Good morning

Since this morning (05/03/2026) Thunderbird freezes within a minute or two of opening the program.

Everything in the program freezes up. I cannot even close it.

I am running Version 140.8.0esr on a Windows 10 PC.

Initially I was getting a pop up warning message that ask me to confirm if I wanted to send an email with attachments of over 20 MB. There were 3 or 4 such messages. I had not tried to send such emails.

I checked the Outbox in Local folders for old messages, but it was empty. I also checked the Unsent messages files in Local Folders in the Profile folder. I deleted the Unsent Messages.msf file to no effect. I renamed and replaced the Unsent messages file. Also no change.

I checked for crash logs but there are none.

I have run out of ideas as to what to try next. Does anyone have any advice?

I cant receive emails only send them. I receive an error message when starting Thunderbird "the current operation on inbox <my email address> did not succeed"

Es bestehen 3 E-Mailadressen (Konten), Nachrichten werden immer in allen 3 Konten angezeigt und gespeichert, wie kann die Zuordnung geändert werden so das Nachrichten nur in den angesprochenen Adressen angezeigt und gespeichert werden?

Thunderbird 148.0 64bit Windows 10

i am confused at this point: Double-click toolkit.legacyUserProfileCustomizations.stylesheets to true in Settings/General/Config. editor, restart TB.

The row background and text colours can be set with css (see picture):

/* row bg, text colours for selected messages table view*/ tr[is="thread-row"].selected {

 color: white !important;
 background-color: red !important; 

}

Help/Troubleshooting Info, Profile Folder, Open Folder, close TB, create a new folder named chrome, create a new document in chrome with a text editor, name it userChrome.css, Save as type: All files *.*, copy in the above code, change the colours as desired. Double-click toolkit.legacyUserProfileCustomizations.stylesheets to true in Settings/General/Config. editor, restart TB.

I posted this question some time back but didn't receive any helpful answers and don't know where my post is. In the upper right-hand corner there is suppose to be 3 symbols. One to lower the app, one to make the app full screen or partial and one with an X. I have jumbled symbols where the 3 good ones are. It does it in trouble shoot mode. I tried disabling addons but I can't get the normal symbols back. Here's what it looks like... Thank you for any help.

Emails are not downloaded. for instance system says downloading 38 emails, but none come through. Constant duplication of emails that have downloaded and delete doesn't work. Info box comes up asking if there's sufficient room in memory as it won't write the emails to my mailbox. emails work fine on another system - BTmail.

Hello, I have tried to send several email replies using thunder bird but they fail because the smtp server times out. Or cannot be reached. I am a new Starlink subscriber and am wondering if that could have anything to do with the issues. The software is on my dell computer running windows 10. Any help or suggestion is appreciated. Buoyantly Professor Bob

I want to be able to search my 20,000 emails if needed in the future. I have shut down the actual email account. I don't want to lose them. I do have other email accounts I am using Thunderbird for.

Translation: My emails in Thunderbird suddenly disappeared.

They were over 10,000, but now they're down to only 7,800.

Why?

Original: Email saya di thunderbird tiba-tiba menghilang, awal nya sejumlah diatas 10 ribu , menjadi hanya 7800 ? kenapa

We tried installing Thunderbird on two PCs, both running Windows 11, but with unsatisfactory results. In July 2025, we bought a 15-inch HP PC running Windows 11. Thunderbird was installed, and the sending and receiving functions worked correctly with one domain name and three email addresses linked to that domain name. In January 2026, we bought a Lenovo T14 PC running Windows 11. We tried installing Thunderbird with the same domain name and three different email addresses linked to that domain name. Result: On the T14, it was impossible to install the third email address; only two addresses could receive and send messages correctly. Furthermore, the 15-inch HP PC now receives messages but can no longer send them; the connection is rejected by the server. Analysis: Apparently, there is an inability to coordinate the two PCs for Thunderbird. Question: Windows 11 had numerous updates between July 2025 and January 2026. Do both PCs need to have Thunderbird installed the same version of Windows 11 ?

Hi all,

everytime I open Thunderbird I get a popup window from Yahoo finance with a server timeout message. I am unable to connect to get my emails through. I need to log on directly to Yahoo mail, which is a pain.

Hopefully someone can help me with this.

Find attached the popup image.

Regards

I haven't been receiving mail from a club I belong to. It was suggested that I approve the receipt of mail from the domain that sends the mailings for the club. But there is no mail from this domain in my inbox, trash, or spam. Is there any way to approve this domain? The domain name is email.onrsu.com

My Thunderbird version 140.8.0esr (32-bit) started to refuse sending mails this morning.

The error message suggested to change the authentication method or if it still not working, my password could be stolen.

I tried changing authentication method, it did not solved the problem so I changed it back to original setting as seen in the picture.

I was afraid my account was hacked. I tried to send messages from my email account via other platform (the Web Mail service from the hosting company) and via my Android phone, mails sent successfully. So, my email account is safe.

Since it is my business email account, I have been using it on Thunderbird daily for decades and I never encountered this problem before. Problem just started this morning.

I tried to create a new Outgoing SMTP with same setting and deleted the old one, it didn't help.

Although my Thunderbird refuse to send out mails, it receives incoming mails as usual.

Hope someone can figure out this problem and help!

Thanks in advance.

Tim

Using Thunderbird, when updated to version 148 (64 bit) the highlighted color is dark and does not contrast to the text color (black) so it is hard to read. How to change the color? or the color of the text?