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I have an account on Ubuntu that has several mailboxes. I need to shift (migrate) this to a new computer with Debian 13. So far I have tried to follow the idea of copying the hidden thunderbird folder. When I start Thunderbird it has a "Setup your existing email address" page.

This is not easy.

Hello.

After the recent update that added profiles to Firefox I have gotten them working on my personal computer but not on my work pc.

The option for creating profiles showed up once when launching the browser but I had to dismiss it at the time. Now I can't find the option to create profiles any more, I have followed the guides that mozilla have put out but the option physically is not there.

I have also tried reinstalling Firefox but that also did not work.

what do?

Thanks.

I added two accounts to my Thunderbird installation, mine and my wife's. Both show the same one Profile folder in Help > Troubleshooting. But when I backup these huge folders (Local and Roaming) by copying them, only my email address seems to be present in file and subfolder names, not my wife's. Is her account not there in my Profile? Why? Can I get it in there?

We're currently on Windows 10 and one of the machines can't update to Win 11 as the hardware is too old. I'm looking at possibly migrating to Linux anyway, as we're already long-time TB and Firefox users. My question is about the migration process and in particular testing/checking the migration is OK, but being able to go back to Windows if needed.

If I start by installing Linux as dual-boot with Windows :

1. Can I leave the TB mailbase on the Windows partition and point the Linux version at the same location (using Settings/Server Settings/Local directory), then use TB on Linux and have the mailbase grow, on the original Windows partition? 2. If so and I need to revert, will the Windows version of TB accept the changes to the mailbase made by Linux? 3. As an issue with Linux is often that you just can't get a program you need in a Linux or browser version, could I e.g. use Linux for most of the time, then boot into Windows to use said Win-only program and at the same time use the Windows' TB until such time as I boot back into Linux? 4. Would the answers to the above differ between IMAP and POP - we generally use POP on PC with IMAP on our phones/fondleslabs, but also have an IMAP account on the PC for if needed. I can imagine that IMAP would facilitate this dual-access better than POP (or would each program have to re-subscribe to IMAP folders when you switch OS), but I'd really like to continue with POP for a fair number of reasons.

Thanks in advance

I have two installations of Thunderbird with each being on a different bootable partition of the same drive so they never get used simultaneously. When I was able to associate both Thunderbird installations to the same profile it was seamless.

My need is to continue having Thunderbird on both partitions but to be able to keep synchronization. I can create two identical profiles set up in IMAP but I assume this will allow for messages already downloaded by the first instance and then subsequently downloaded by the second be flagged as unread. This seems trivial but a moderate inconvenience still. Add to that, I have quite a few accounts in this profile and would find it daunting to have to input completely again all this info. Hoping for a simpler solution.

I also just did the usual copy/paste of the currently used shared profile to the default profile folder for the instance of Thunderbird that alerted me of its inability to use a shared profile but am finding this is not enough to produce an operable profile. Seems it has been flagged as unique to the other partition's Thunderbird (which is on the currently inactive partition).

Any suggestions would be greatly appreciated.

Hi All,

I have recently upgraded to a new PC, reinstalled Thunderbird and imported my profile from my previous machine. However, there are now two profiles using the same email address and I am experiencing that some of my emails go to one profile and not the other or vice versa. This means that if I delete one of the profiles I will lose the emails that are in there but not in the other.

Do you know how I can resolve this?

Kind Regards,

Mike

I have Firefox installed on both my desktop and my laptop. On my laptop, I am able to create and manage profiles; however, on my desktop, there is no option available in the menu (the hamburger menu) to do so.

I have verified that both devices are running the latest version of Firefox, which includes the profile management feature, but I am still unable to access it on my desktop.

Hi, I am about to transfer my profile to a new computer, and have noticed that my profile contains many empty files - about 300 AlternateServices-???.txt, and about 200 folderCache-???.json files.

Can I safely delete these?

Many thanks!

Hello,

I need to purchase a new PC because my old PC was not compliant with Windows 11. I've installed Thunderbird and copied over my data, profiles, etc.

I've noticed that there is folder added to my offline Documents folder called "Thunderbird" and in this is another folder and a file.

Is this normal?

Thank you,

Gordon

I'm on a Win 10 desktop. Version 140.3.1esr worked okay yesterday but when I started it this morning it is now missing my email accounts, folders, calendar, and contacts. Unfortunately I haven't done a backup in some time. The first image shows what I see.

The 2nd image shows that there are 2 profiles in the Thunderbird folder. The rc2jk0cq.default-release profile was created today & appears to have all of my data; it's the default profile. The v9w93tjh.default profile has an extensions folder and 3 files.

How can I recover from this?

Thanks

I am trying to install Thunderbird into a new computer with Windows 11. When I try to run, it goes to a configuration page but will not connect after finding my account. I have double-checked password, but it says "Unable to log in at server . . . ".

I have uninstalled and reinstalled new program, but get the same response each time. I want to install Thunderbird (and Firefox) and copy my profiles from my old computer to the new one. I am not able to do either. I have followed the online instructions for moving/migrating both, but neither work. Any suggestions?

Rad

I have multiple email accounts. I am able to locate my profile and can see the Mail account in the profile folder. Where can I find the mail for a folder in one of my accounts? For example an email address might be bill@nothere.com and the folder under that might be Bounces. Where would I find the mail that is in the Bounces folder?

My version of Firefox wont save History, Bookmarks or Downloads. I've made sure the privacy settings are correct and have tried reinstalling Firefox several times. It also wont let me drag a link from the address bar to the bookmark bar anymore like it used to. Any help with this would be much appreciated... Thanks!

I am trying to set up a profile however when I click the account icon the profiles menu item does not show up like it says on the manage firefox profiles guide. I am updated to latest firefox version.

Hello. I have tried to backup my Thunderbird profile and simply cannot find it. Using Thunderbird 140.3.1esr(64bit) on mt laptop (Windows11 version 24H2 - fully updated). I have gone through all of the suggestions using T'bird help/troubleshooting and export to show profile folder. The profile file name is shown but annotated as "Unavailable". Gone through looking for hidden files and cannot find it. Even did a complete file search to no avail. Thunderbird works fine so the profile folder must be somewhere.

I hope you can help.  Steve

Hi ... I have carefully followed the instructions but when Icopy and paste ihe file involved - it seems to transfer - but NO PROMPT to overwrite appears. What might I be doing wrong?

Can I safely access my Profile, which is on a Windows partition, when I am using Thunderbird under Linux (Fedora) on a different partition?

My computer is set up to dual boot using Windows 10 and Fedora Linux. I use Thunderbird and access my emails using POP3.

I use Windows most of the time and therefore my Thunderbird profile is on the Windows partition. But when I'm using Linux I sometimes like to be able to access my emails using Thunderbird. I have set up access in the Linux Thunderbird profile so that it points to my profile that is on the Windows partition.

In some earlier versions of Thunderbird that were around in 2022, I found that if I used Linux to open Thunderbird I could access my profile that was on the Windows partition and read and send emails, but then when I rebooted to Windows and tried to run Thunderbird, I found that my profile was broken and Thunderbird under Windows could not get to my emails.

But, confusingly, with some versions of Thunderbird, the Linux version of Thunderbird did not break my profile on the Windows partition.

I tried asking questions about this issue on the Forum back in 2022 but I received answers saying that what I was trying to do was very "dangerous" and I should not even attempt it (even though it did work sometimes with some versions of Thunderbird).

The last time I tried this was in 2022, and I have not tried it since then.

So, my question is "Is Thunderbird robust enough to allow me to access my Windows Thunderbird profile when I am running Thunderbird using Linux (Fedora) on a different partition?

I am buying a new PC. I would like a 'blank' TB on this machine so I can replan the folders and the email address books. I'd like the current copy on my current PC to be moved to the new PC such that I can access it as I do now but- like a 'sleeping' copy - ie just there to access the emails and address book occasionally/when needed, but not receive new emails.

This will give me a fresh start on the new TB on a new PC, and will save me having to clean up the old TB version. Is this possible? Thankyou

I am having trouble moving Thunderbird data from one computer to another. The first computer is Windows 10 32-bit that has been running T-Bird 140.3.0esr for several years. The second is Windows 11 64-bit running T-Bird's latest version. I tried both procedures cited in the Mozilla article at https://support.mozilla.org/en-US/kb/moving-thunderbird-data-to-a-new-computer.

I first did the 2nd method cited -- Win 10 to Win 11. It worked but the new computer is missing Local Folders and contacts organized as groups.

I then did the 1st procedure cited, using copy and paste commands. It did not work at all and now T-Bird will not load. I get this message: "Your Thunderbird profile cannot be loaded. It may be missing or inaccessible."

So, different operating systems with different bit specs and different T-Bird versions.

I thought of updating the Win 10 computer to T-Bird's current version and then doing the Win-10-to-Win-11 copy/move procedure but thought it best to ask here first. Thanks for any help.