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I updated Thunderbird to the latest version and now I have a problem that continues to remain after closing the process.

Thunderbird 115.10.0 64bit (Build ID 20240412173147) OS Windows_NT 10.0 22631

Anytime I attempt to send an email in the CCC ONE application, I get this error message from CCC ONE:

"Unable to perform selected action while the email application is open. Please close your email application and try again."

This error message persists whether I do have Thunderbird open or not. I also checked Task manager while I had Thunderbird closed and found no instance of it running. Is there any way that Thunderbird is running in the background? Or could it be if Thunderbird loads at start up that it's tricking CCC into thinking it's open all the time?

I contacted CCC ONE report and they advised me to attempt to change the name of a DLL file so a new one would be created to replace it. I tried that, the issue still persists. They also told me to try and uninstall and reinstall Thunderbird, which I did, and it still won't work.

Any ideas on how to fix this?

• Attached is a photo of the error

I have had message filters set up for a long time. Recently I tried to make some changes (adding one filter, deleting others, changing the response). I find that if I close Thunderbird and reopen it, all my changes are gone! How can I get the filter changes to stick?

I recently moved to a new Windows machine and can not send mail from either hotmail or gmail accounts. I am able to send and receive from my account at outlook.office.com, but hotmail uses outlook.office365.com as the mail server.

Thunderbird Version: 115.10.0 Windows 11 Version: 23H2

The message I receive when trying to send is: Sending of the message failed peer's certificate has an invalid signature the configuration related to smtp.gmail.com must be corrected (also for smtp.office365.com)

I did try all of the fixes advised here, as the error message certainly matched what I was seeing: https://support.mozilla.org/en-US/questions/1295861 so my settings in TB are currently: security.tls.version.min = 1 security.tls.version.enable-deprecated = true

The final suggestion in the above thread was to move back to Thunderbird version 68.11.0, which I will try if nothing comes of this thread by the weekend.

When I print an email, TB prints all of this technical jargon such as X-MS-Exchange lines, and what seems to be the background handshake protocols behind the email. I just want the contents of the email printed. May I ask how I fix this, please?

I upgraded to Thunderbird 115.10.0 (x64) earlier today and now the program is no longer closing completely (I've tried using the X at the top right of the window, and I've also tried File menu -> Exit). I first discovered this when I was using CCleaner to clean my temporary items and it asked me if I wanted to close Thunderbird after I had already closed it. I then checked my running processes and there are three Thunderbird processes that remain after the program has supposedy closed (Task Manager screenshot attached).

Any help with this seemingly new bug is greatly appreciated!

Much thanks, -Snipe

TB no longer will start. It just hangs and when I go to it on my Mac I see a spinning disk. That never changes and eventually, after hours, I must force quit and report it to Apple. I receive no messages or error codes.

Hyperlink insertion only works in troubleshoot modes but not in main mode even if all extensions and hardware acceleration are turned off (used this guide: https://support.mozilla.org/en-US/kb/troubleshoot-mode-thunderbird#w_the-problem-no-longer-happens-in-troubleshoot-mode)

Please help me.

Thank you!

Using TB v91.5.1 on Windows 10 x-64. I have several mail accounts, one of which is for a hotmail.com address. This has been working fine for years, but over the past couple of days, I don't seem to be able to send emails form this account. I can receive them fine, but when I try to send, I get the small pop-up telling me it's sending the message, and the progress bar is at 100%, but it doesn't send the message, it just sits there.

I looked in the error console, but nothing was added when I tried sending.

You can see my server settings for the account in the attached image.

Any ideas? Please let me know if there is any other info you need.

Thanks

Hello ,

using Office 365 with thunderbird like below config 

Server name: outlook.office365.com Port: 993 Encryption method: TLS

Server name: smtp.office365.com Port: 587 Encryption method: STARTTLS

But now there is an error login to login to server outlook.office365.com with username failed

In thunderbird 115,

I have clicked "hide message list header" and cannot find a way to show it again

how do you unhide it ?

https://support.mozilla.org/en-US/kb/getting-started-thunderbird-main-window-supernova#w_4-message-list-header

Hi all

Since yesterday Thunderbird is unable to connect to the server and download new emails.

I got the following error message: "Non-overridable TLS error occurred. Handshake error or probably the TLS version or certificate used by the server mail.blacknight.com is incompatible."

I am running Thunderbird v102.2.2 for 4 days now but yesterday was the first time this error has appeared.

security.tls.version.min is set to 1. In fact, it has been set to 1 for more than a year now.

The host tells me everything is fine with the cert used by their server.

Any ideas or help would be greatly appreciated.

Thanks.

When Thunderbird updated to 102.6.1 the other day, my address book disappeared. No more personal address book or contact lists. Gone. (My 'Personal Address Book" went from 2,000 names to 24. Yikes!)

Plus, I can't even type people's names into the emails and expect it to populate like before. I have to search for their emails and rewrite it.

Is there a way to fix this? Or to roll the program back to the previous version?

Since I backed my email list up last month, I've made lots of changes. But if I have to, I'll just re-import and try to recreate what I've done. (Reminder to self to back up more often).

Thanks for any help or guidance. PS - I'm on Windows 10.

Hi,

TB 91.5.0 on Windows 10 (with profile folder excluded from virus scan)

The latest update to seems to have resurrected a problem with saving copies of sent emails. Sending works fine, but copying of the sent email to the sent folder causes the send dialog to hang. Disabling the "Place a copy in:" option in account settings eliminates the problem. Using the "Other" option to place it in a local folder works *that is not part of a unified folder* works OK.

I have tried repairing folders and deleting the sent files inside "smart folders" in the profile, with no luck.

Older details here: https://support.mozilla.org/en-US/questions/1363781

I have Thunderbird installed on two computers.

On one of the computers, emails being held in my inbox are being automatically removed after two weeks (this is not a desirable action, I am loosing important emails), but on the other computer that is configured exactly the same, emails remain in the inbox indefinitely (which is desired).

Both computers are POP and both configured to run the same email account and appear to have all of the same configurations and settings. I saw someone had posted the same problem a while ago and the reply indicated it may be that the ISP or email provider has their settings set to delete emails as per the two week window, but as I can assure you this is not the case, it is a configuration issue with one of the Thunderbird installations, otherwise both of my computers would be deleting the emails while that is not the case.

Thanks,

Jeff Rogerson

1 of my customers are experiencing ThunderBird not responding, very random when it does not respond, Windows 10 Pro 64 Bit I checked that Mozilla ThunderBird is running latest version (x64 en-US) Version 102.3.3 The fixes I have tried are running the setup exe file I have checked email settings are correct Check task manager to see if anything is overloaded such as RAM Memory Check AVG Firewall and allowed ThunderBird Adjusted Windows power management settings to high power plan

Hi Community, i wanted to ask wether it normal that Thunderbird 115 needs 60 seconds to load the interface? When it starts it shows my personalised theme and an empty space for a whole minute. (i measured it)

Directly after installation everything was fine. But now i have set up my acconts and rearranged some buttons. Is there maybe a problem with Exchange synchronisation on startup? Both of my accounts are provided by Exchange servers.

Greetings ffproblems

Dear community,

in the past, I have noticed that a few e-mails - but not all - are displayed incorrectly as plain text instead of the usual HTML-text. This means that there is no formatting involved, e.g. the font art is not correct. As it seems, the issue occurs when the standard formatting options of e-mails are used by the senders. So if nothing is changed like the font size or colour. If I look at the e-mail on different e-mail programs, everything is alright. I have already ensured that the option View > Message Body As > Original HTML is enabled.

Thanks in advance for your advice. batengo