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Hi, So I used Thunderbird to create a zipped backup file of my profile. I got the warning that if the file size if more than 2 GB I may want to make a manual backup. I proceeded, and ended up with a file that was 15 GB. I then uninstalled Thunderbird, reinstalled it, and tried to import my backup file. Thunderbird gave an error, saying the file is too large, and I should manually extract it. Okay, I tried, but Windows 11 failed to extract the file. I then used a third-party app to extract the files. This gave me a c2140ucr.default folder that contained three direct subfolders and many, many files. I located my inbox.ca file, which is what I really want, but I cannot find a way to import it into Thunderbird using the Tools menu. Any ideas on how to recover my previous profile would be appreciated. Thanks.

Hello, I just enabled the backup sync option for the Firefox web browser (Win 10). What is the equivalent process, or recommended method of enabling a backup for mail folders, calendar entries, address books, settings, etc. of the most current Thunderbird version on a Win 10 PC? I could not find a clear answer in the help forums. Thank you.

I want to restore a previous profile which I can see on File Explorer, but no previous profiles appear on the About Profiles page. How can I access this previous profile?

Dear Agent, My computer has been updated to Windows 11 from Windows 10. The Firefox profile settings has not changed from Windows 10 to Windows 11. How can I edit or update to Windows 11 in my Firefox profile?

Regards,

Hi, In profiles, I have several, many of which are up to date and 2 are large, one which is meant to be my current profile at about 2.5 Gb and another at 3.6 Gb (plus others of about 50 Mb) - see screenshot. What is going on?

I keep finding names in my account list with the name hakeem attached. I don't know who this hakeem is or how this name and the associated links became attached to my account. I have 3 firewalls and several antivirus/spam/etc blockers activated. Help.

My Windows 11 laptop became corrupted and the os had to be reinstalled with Microsoft's help. In the midst of all this I did not think of backups sadly. After the restore I started to put my apps back on and without thinking, I installed Thunderbird. I realized immediately my mistake when I saw only new email and no local folders.

The Windows restore created a windows.old directory and I see my profile and configuration files in it. I want to use those old files but I don't know where to copy them exactly. There is some confusion on my part about where the startup is happening for Thunderbird. I really need to have access to all my old mail and local folders.

I'd appreciate any help in this matter. Thanks, Sue

It started with duplicate Archive and Drafts folders...so I checked TB help, and it gave me several suggestions, including going to my Profile folder and deleting duplicate folders from there. Everything seemed fine...until I realized that suddenly TB has NO emails later than 2022! I went in to Gmail to see if I could recover them...but they're all missing there as well. In my business account--also through Gmail, but managed through my domain name--not just my Inbox, but EVERYTHING is gone. It's as if I never existed.

This is extremely upsetting: I teach and have my own business, and losing all my emails is catastrophic.

Can someone please help?

I am in the process of transferring machines to a new machine for Win 11 At the same time, I have moved from an older version of Thunderbird to the latest version in the .esr release channel. I have now a new default profile with the thunderbird upgrade but want access to the data of the older profile. The older profile was running under an earlier version, release 140. Can I change the existing default profile to be the profile from the older thunderbird version and what are the implications

Unimportant and mildly disruptive issue: I've been using the about:profiles method to maintain separate profiles. I am aware that this is distinct from the new way to manage profiles (about:profilemanager; https://support.mozilla.org/en-US/questions/1543697 ).

I normally use my default profile (let's call it profile A) to open other profiles (of which there are 6 + a Nightly profile).

However, recently I've noticed that if I open another profile (B) from profile A: Refreshing profile A's about:profiles makes it inactive, with the "Another copy of Firefox has made changes to profiles" error. Now, B's about:profiles correctly displays the different profiles, and I can launch more profiles from here. But A is still shown as the default profile. I've tried this with a few other profiles (C, D), but even with those open, B still seems to have the functional about:profiles page.

Is there any way to reset this, i.e. to make A's about:profiles functional even when profile B is launched?

Edit: I think this is because profile B has the new profile manager enabled, and under this, B is the original profile. I tried setting browser.profiles.enabled to false in the about:config settings but this doesn't seem to help. Oh well!

I want to install Thunderbird on my new computer (Windows 11) from my old (Windows 10). But I cannot open the downloaded version of Thunderbird - it keeps saying there is no profile. Of course there is no profile before I have installed it! I de-installed and re-installed the Thunderbird program, but it keeps saying the same thing. How can I open Thunderbird to install the profile?

hi, if i sync 2 t/bird installs which one will install its personal data on the other pc?. the same question also applies to my f/fox install if anyone knows

win 10 tb145.02

thanks very much if anyone knows

Hello. We changed from the ESR channel to the regular release channel today by installing Thunderbird v146.0 (regular release version) over the top of our existing installation (which was the ESR version). The installation went fine and everything appears to be working perfectly. My only question is why the name of the profile didn't change. It still has a name of 'xxxxxxxx.default-esr'. I would have thought that the name would be changed to 'xxxxxxxx.default-release'. Is this something we should change, or should it be left alone. Thank you very much for your assistance.

I set up Thunderbird on Debain 13 OS "Trixie" and then migrated (or tried to) my profiles.ini and attendant email folders to Ubuntu 24.04. I have done this before between Linux and even Windows installs, copying the folders over. Usually that is all you need to do to migrate emails and 'set up'. However, migrating from Debian to Ubuntu causes issues, namely the import is rejected by TB. At first, I thought perhaps Debian is using a newer version of Thunderbird and Ubuntu uses an older version, so I upgraded Thunderbird to a newer version. Import of profiles and folders still crash. This is using the profile import tool in TB.

I have a lot of emails via IMAP and it takes a long time to set them up and about ten gigs worth of emails. Is there anything that can be done?

I had to install Windows 11 fresh because of multiple issues with my PC (I upgraded from 10 to 11 6 months ago). I installed Thunderbird fresh, and am trying to get it to see my existing data with is on my D drive. I browsed to the folder in Account Settings, but it's not showing up. I have years of mail and don't want to lose it.

There are too many options in the help for me to know which are actually related to my situation. I thought I was ready to do this, but am surprised at how difficult it is compared to the last time I did something similar.

Any help, even just pointing me to the right place to look for help, is appreciated!

Thanks!

I have a Windows 10 machine, have been using Thunderbird and pobox for years.

In case you're not familiar with pobox, it is a mail forwarding service; I pay for an email address and they forward email to up to three servers. I've thereby kept the same email address for a very long time, just changed the address(es) they forward to as I change ISPs, etc. At some point I quit using my ISPs server for my email and just used the one at pobox.com. Pobox was purchased by Fastmail, and so they have some new server names; my old ones have continued to work on my current system.

I use POP3 instead of IMAP because I want the email on my machine, not on a server somewhere. I configured Thunderbird to do this long ago, and so I don't remember details; I've been depending on being able to extract any needed information from its configuration. I am confident I have the password correct; I can log into the web interface to my email, and the password works there.

My new machine is a dual-boot Win11/Ubuntu; my plan is to use the Ubuntu machine almost exclusively and only boot Win11 when necessary. I want to move email operations to the new Ubuntu machine.

I've read info on moving Thunderbird; I find the profiles on the source machine, move up two directory levels, find the equivalent directory on the new machine, copy with replace. I found:

c:\Users\name\AppData\Roaming\Thunderbird

on the Win10 machine, and

Home/snap/thunderbird/common/.thunderbird

on the Ubuntu machine, so I copied the files from the first to the second.

Having done that, when I start up Thunderbird, it displays a page saying "Set up your existing email address". If I do that, of course, it will create a new profile, and I still won't have the old one. I've tried creating it manually, but (a) I don't know how I will then merge it with an old profile and my thousands of email messages, and (b) I'm having trouble figuring out the incoming and outgoing server settings. I remember struggling with that back on Win7 or whenever it was.

Anyway. Anyone got suggestions on what might be going wrong here?

Hello,

I am using Firefox in Malaysia. I updated with the latest browser, but I do not see the new profile management (https://blog.mozilla.org/en/firefox/profile-management/).

Is this feature available in certain countries?

Hello, Apparently, when changing the name of the .thunderbird folder, to hide it, Thunderbird 140.3.0esr (64 bits) continues to exhibit messages. I do not find where they are located. Any idea? Thanks SG

Xubuntu (Ubuntu 22.04.5 LTS) Thunderbird 140.3.0esr (64 bits) Firefox 128.12.0esr (64 bits) Zotero version 7.0.11 (64-bit) LibreOffice 24.2.5.2 (X86_64)