Thunderbird Support Forum

I'm trying to migrate Thunderbird from my old PC/Windows 10 to my brand-new PC/Windows 10, following the step-by-step instructions on https://support.mozilla.org/en-US/kb/moving-thunderbird-data-to-a-new-computer. I followed those instructions to the letter (multiple times) but can't get it to work. Are there more recent (and perhaps more complete) instructions to be found elsewhere? Does anyone else have the same?

I have made a copy of my old TB profile folder on a backup stick (it is titled 'Thunderbird', and inside that folder is a folder titled 'Profiles' that contains a number of folders including the most recent profile that I am still using with my old PC. The difficulty is getting this backed up profile info installed on my new 'destination' computer.

Any suggestions would be greatly appreciated.

After importing events from the old ics calendar into the existing CalDav calendar. TB sent invitations out to all attendees, even for past meetings. How to avoid this?

Without notice, Thunderbird today required me to sign-in to my Google account and then produced a window in which it said it wanted to access to my mail, contacts and calendar; in order to compose, send, share, delete permanently, among actions on my personal content. I tried to "Deny" (see below) but the window just returned and returned and could not be deleted. (see "Uploaded images", below for the content of this window).

Is this a scam? Or the result of a hacker?

I am trying to download your program, before I am allowed to select what I want, your software decides which version I need. It then wont let me install it because I need windows 7 or later. Your software has seen I am running windows 10 and downloads what it thinks is the right version but then wont let me install it. Every time I try to get the the page displaying the various programs , it is covered up with a page asking for money so I cant see it. Very poor. How do I get round this.

Since the latest upgrade to 115.10.1 (64-bit) I have an issue about running Thunderbird.

From a clean Windows 11 start up it is OK but then if I then Exit and then try to run the bird again it does not start.

Digging around I discovered using Task Manager, a number of Thunderbird processes run after I had Exited. See attached.

Any thoughts?

I have three different computers that I can use Thunderbird to access my hotmail account. All three computers can have the exact same server settings. One computer refuses to send emails unless I cancel the send and immediately resend.. Thunderbird ver 115.10.1 (64-bit) Windows 10 Home Ver 22H2 IMAP Mail Server outlook.office365.com Port 993 Connection Security SSL/TLS Authentication 0Auth2 Outgoing SMTP Server smtp.office365.com Port 587 Connection Security STARTTLS 0Auth2 Take Note All three machines can have identical settings listed above or various changes like Normal Password instead of 0Auth2 and/or an Outgoing server can be smtp-mail.outlook.com with normal password or 0Auth2... One computer must be cancelled will sending and when resent, it goes... no problem...immediately. If I don't cancel and wait, for it to send on the 1st attempt, it will eventually timeout on the outgoing server. Then I might have to reenter a password. Very annoying. I have been doing this for years. It is my workaround....

For some reason, my Thunderbird recently "updated" to version 115.10.2, and the "About Thunderbird" dialog says that it is on the "esr update channel." I can find no information about the esr channel. However, when I start Thunderbird, it displays the "Welcome to Thunderbird DAILY" screen. Am I correct that this is an error? If I were really on the daily channel, I think that the version number should be higher.

Why don't you just allow users to just right click on an unwanted email and block the sender? I'm getting so sick of spam that I thinl I'm just going to use gamil for everything and dump thunderbird - it's not a lot of use if I can't block a sender without having to open the email.

Hi. I have inherited a job where the email is Gmail. I inadvertently set it up in Thunderbird, and it downloaded about 1500 emails from the server. I don't want to delete them off the server, as I'll probably be passing the account onto someone else soon.

1/ So, will they redownload every day I open Tbird?

2/ If not, is there a way I can delete them off my Tbird, and they DON'T redownload, but stay on the server?

Thanks, CD

Was trying to find a solution to new emails not showing but unread number increasing but no applicable articles were coming up. But after hours of trying solutions, I think the answer was to mark some older emails that were marked unread as read. Then the latest couple of days of emails started coming through. This happened when migrating Cox.net emails to Yahoo and then modifying Thunderbird account settings to retrieve them. This email account has over 14K emails from 2014 and later showing in Yahoo Inbox and somehow the Thunderbird Inbox is showing 26K, probably some duplicates, although I have been using the extension "Remove Duplicate Messages". In Yahoo, I made more folders for several older years and moved emails from the Yahoo main Inbox to those various years to cut the size of the Inbox. Any other suggestions would be great for similar situations.

When I start Thunderbird, it asks for Master Password right away, and then again just after it opens up.

I asked question last year, but didn't get much response.

What can I do to just have it ask one time when starting Thunderbird? I tried disabling "check new messages at startup" on all accounts.

I have cox comm. for internet and emails, they just changed their server to yahoo.com. Now I cannot sign into thunderbird to send or receive emails.

After the latest update, Thunderbird does not open. On line instructions say to erase some programs in it's file location. Did that, and the program booted. However, today, it will not open again. Can you fix this issue with another release, or should I try to go back to the previous release? If so, how to go back to the previous release without losing all my set up? It is not practical to have to erase those files every time I want to check mail. Thanks, JT King jtking@zoho.com Catdoctor12@gmail.com

Cannot send email. Has there been a Thunderbird virus since last update? I conferred with Charter Communications and they were unable locate any problems. However, I did note early on that in settings Charter Communications was spelt incorrectly. (Commuications).