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Given Thunderbird version 140.7.1 esr (32 Bit)

Since 27.01.26, no emails have been downloaded from my ISP Server and I don't know how to fix.

Note in the version above, it says (32 Bit) but Windows 11 is exclusively 64 bit ????

Just updated to latest Thunderbird version and now I can't send my email. I keep getting the message "Login to server smtp.broadband.rogers.com with username [my email address] failed."

Then when I exit this notification, the following shows up "Sending of the message failed. Unable to authenticate to Outgoing server (SMTP) . Please check the password and verify the 'Authentication method' in 'Account Settings | Outgoing server (SMTP)'."

I made not changes afer in upgrade of Thunderbird to latest version.

Any help you provide would be appreciated.

Bob Gmeindl bob.gmeindl@gmail.com (btw, this is not the email address I use with Thunderbird - that one is bgmeindl@rogers.com)

Hi, I'm a new user. I cannot send email. Receive is ok.

I get this prompt: Password required for outgoing (SMTP) Server mailhost.zen.co.uk So I add the password, but then I get this error: Login to server mailhost.zen.co.uk with username zen53214 failed. Retry - Enter new password - Cancel I add a new password (the one I use on the zen webmail portal) and I get this message: Sending of the message failed. Unable to authenticate to Outgoing server (SMTP) AUTH command not available at this time. Please check the password and verify the 'Authentication method' in 'Account Settings | Outgoing server (SMTP)'. The outgoing server setup is the following: Description: zen53214 Server name: mailhost.zen.co.uk Port: 857 Connection security: STARTTLS Authentication method: Normal Password User name: zen53214

There is a sync issue with zen email password but I cannot change it on the zen portal, because the password in ThunderBird doesn't have a special character and Zen will not let me change the existing password to one that doesn't have a special character.

What can I do to resolve? Please help. I'd like to stay with ThunderBird email.

Thanks!

Mit meinem e-Mail Konto .gmx.de kann ich keine eingegangenen Mails mehr weiterleiten und auch keine neuen Nachrichten mehr versenden. Nach dem Betätigen "Senden" kommt immer der Hinweis "Postausgangsserver SMTP kann nicht authentifiziert werden.Überürüfe Passwort und gewählte Authentifiziermethode unter Kontoeistellungen " .Ich habe aber nichts verändert und weiß nicht was ich in Einstellungen überprüfen soll oder ändern soll.

I started getting this problem about 6 months ago. I have used Thunderbird on Linux for years with very few problems until about 6 months ago. What happens is that when I send a message I get a dialog box saying sending and it will hang there for a long time, sometimes permanently. The size of message doesnt matter. Sometimes I can click on cancel and then retry and I am sometimes told it was sent but not saved. Sometimes it did not get sent at all. It is getting more and more annoying. It seems to happen after long periods of inactivity. Its not DNS, I have changed settings and DNS servers make no difference. I even went through and deleted lots of email and still it persists. I am running no extensions.

Upon re-entering mail accounts, all (outlook, yahoo, gmail) I follow all instructions but every time TB responds "configuration could not be verified - is username / password wrong" ? Same when I try the Manual Config, all setting correct, but still TB cannot find the account.

What happened ? Jane

One of my 2 Tbird accounts will download a new message but not display the contents. In the inbox list the message remains bolded, and clicking on it won't display the contents or unbold it. Any suggestions? Tkans, Alan

I have Thunderbird with the same email box on my computer, laptop (both Windows 11) and mobile phone. Starting this morning, any new messages stopped coming to the laptop and computer, only to my Android mobile phone. I have checked all the email settings but there is nothing wrong

I have three email accounts all from different sources.

Two of the three accounts work fine but one account will give me this error message. I back up the Thunderbird folder every week and copied the backup to the working folder and I still have the issue.

I've been getting multiple emails of the same in a few folders. I do have a lot of Filters set up for the account affected.

I have two Yahoo email addresses 0 d6a.... and den2....

Both are set up in Thunderbird

However, in Thunderbird, both addresses show the email/folder data associated with the den2... address!

No emails for the d6a... address load to Thunderbird.

Separate data appears for each email address on the Yahoo web pages.

I used to have Windows 10 and was using Thunderbird with Quickbooks POS 18 and if I wanted to send an email in Quickbooks like a purchase order or receipt, it would open up a mailto window in Thunderbird with no issue. I've moved to a Windows 11 computer with the same profile running a 32bit version of Thunderbird, set as my Windows default mail client, even in the registry I've set it there but Quickbooks says I don't have a default email client setup. I've exhausted every search over the internet trying to fix it. Any ideas?

Changing color of the text during composing an email does not work when I use "Choose a color" button. The color in the button changes, but when I click "Ok" the color does not change. The color change works though if: I click "Last-picked color", or when I type color name "Green" or HTML hex, and subsequently click "OK".

How to change the color of text in a composed email when

I am using Thuderbird on macOS.

When trying to run in Safe Mode, and compose a new message, I the Thunderbird stucks, so I cannot confirm in Safe Mode, but I had this issue in the past also on other machines/Thunderbird instances, so maybe someone else had a similar problem, or maybe it is a known issue, already in dev team logs.

Hello,

Need To Know:

I have used Thunderbird (TBird) for many years. Recently, I moved TBird data from a Dell Inspiron 530 Win 7, to Alien Arora 1250. Unfortunately, the passwords would not go, so I copy and pasted the data for 10 email addresses. All worked well, until 5 days ago when I could not log into the ISP.

Since then, 12 ISP tech support people gave me 12 different was to fix the login problem. The 'logging in' kept trying to login. The only way to stop it is to close TB and restart it. The same happens with all 10 accounts - can't login.

I followed instructions to the letter and nothing worked. Later, a tech at ISP said they have had a lot of complaints from people with Tbird and said it's Mozilla's fault. They all said they don't support Thunderbird. They only support webmail. One even suggested I delete all my cookies. Of course I'm not going to do that.

You would not believe the amount of crazy ideas I was given.

Here is the core problem:

I used both Pop and IMAP depending on the email account. TBird was great with POP and IMAP either.

I changed all the passwords as instructed. I followed the Step-x-Step settings on the ISP web site

The ISP, Rogers, took over Shaw. Rogers, I'm told, dropped support for 3rd party email clients and requires customers to create a new email on their Webmail host. Webmail is WEBmail because it is not Email.

Testing Out TBird:

1. On the old Win 7 TBird (Ver. 68.1.1 (32-bit)) Email works with both POP and IMAP settings.
2. On the new Rig, Tbird (V. 147.0 (64-bit)) worked for a while.

What Happens: -- Due to the issues, I set Tbird to not:, -- Check for new messages at startup -- Check for new messages every -- Automatically download new messages -- Fetch headers only

The two ISP are Rogers Rogers and Shaw <--- just redirects to Rogers. But webmail.shaw.ca still works.

My Rig with the issues: Alienware Aurora Desktop 1250 Intel i9 Ultra Nvidia RTS 5080 Memory 32 GB DDR5 Storage 2 TB SSD + 2Tb HDD Thunderbird Version-147.0 (64-bit)

Is the ISP correct, that Thunderbird may be the core problem?

Thanks for your volunteering - where would we be without you, ~r

risposta a messaggio e-mail da Mozilla support in data 3.2.2026. versione Thunderbird: 147.0.1 (64 bit) sistema operativo: Windows 11 - versione 25H2 - build SO 26.200.7705 provider: Tiscali (con problema descritto nella precedente richiesta di supporto) - senza problema descritto: Aruba pec, Gmail, Libero, Simail, Outlook, Aol software di sicurezza: Microsoft Defender Firewall

Hi, I recently installed Thunderbird (POP account type), but it only downloaded about 3000 emails and then stopped, even though I have a lot more emails I would like to archive. It's been about 2 days since no more downloads have occurred. Ive got no way of knowing if it's a temporary pause or what the issue is.

I installed Thunderbird to archive my emails as I intend to delete some older emails from google work space to clear up space, but I want to still have an offline archive of these email.