I found this described in https://bugzilla.mozilla.org/show_bug.cgi?id=1625111

Hi Wayne,

Thanks for your response. I see there's a problem, but that post mentions Firefox, where I'm having trouble with Thunderbird. Also, it mentions Linux Mint & Fedora, but I'm using Zorin Pro. Do you think it's still the same problem? I'm very new at using Linux, so do you know if there's a simple way around this? I've never used the Terminal before, but I plan to start learning. It would be great if I could get my email working on this computer before several months from now!

Thanks, DD

Let's try the simplest way first (but do SAVE the exported profile you created earlier, as we may need it). - if the profile is less than 2gb, the simple way is to click tools>export on windows PC and tools>import on LInux PC. You would need to reenter passwords, but the transfer would be complete.

Now, if that doesn't work, then let's use your previously exported profile. We will use a suggested approach from this URL: https://kb.mozillazine.org/Moving_your_profile_folder_-_Thunderbird

1. On the Linux PC, click help>troubleshootinginformation
2. scroll down to 'profiles' and and click 'about:profiles'
3. click the 'create profile' button in upper left
4. click next
5. enter a short name for the new profile, such as NEWPROFILE
6. click Finish
7. the new profile should now appear on the screen
8. click the 'open folder' button for the new profile in the roaming\thunderbird\profiles directory
9. paste the contents of your exported profile here, save it, and then launch it.

Hi David, I couldn't seem to make this work. I hope I can remember everything I did. I followed your directions, and all was fine until #8. I saw the new profile that I had entered (10-27-profile), but there is no "roaming" folder, only a "cache" folder (see screenshot). So I opened that directory and pasted the contents of my profile from my Windows computer into the folder for the new profile. Then I closed TB and restarted, but just got the same screen that wants me to set up my account. No emails or anything in there. In #9, you mentioned "save it", but I'm not sure how I could do that - there was no "save" button anywhere. Maybe you meant to just paste it? Any ideas? Thanks for your help, DD

My error. I am a windows person and rarely use Linux. We're almost there. Do this instead:

1. click help>troubleshootinginformation
2. scroll down to 'profile folder' and click 'open folder'
3. now EXIT thunderbird, you are now in the profile folder
4. back up one folder and then paste the contents of your exported profile to replace the active profile
5. now restart thunderbird and let me know how it goes.

Hi David, So, I think from your last message you are starting at #8 from your first list of steps. I have my backup of my profile (which is 12GB, unfortunately!). But, unlike on my Windows computer, when I open help/troubleshooting information, There is no "profile folder" or "open folder option". There is a "profile directory" and to the right of that "open directory (local drive)". But this is where I got stuck before, because when I click on it, nothing happens. I think this is the Bug referred to. You can see the image in the first screenshot in my original post. So, somehow, it seems I need to find the Roaming folder, or maybe there isn't one in Linux? Thanks, DD

Yes, https://bugzilla.mozilla.org/show_bug.cgi?id=1625111 mentions Firefox. The same issue applies to Thunderbird.

That bug report is helpful. Click 'account settings' and scroll down left side to 'Local Folders' (It is below any accounts that are defined) Now, on bottom line if that pane is the link to 'Local Directory; The rightmost part will show \Mail\Local Folders' but the path to the left is the location of the profile. Exit thunderbird and paste your profile there Now, restart thunderbird

Hi David, I attached a screen shot here. When I click on Account Settings, there is no "Local Folders" on the left side. I haven't defined any accounts because I wanted to use the ones from my previously saved profile. Any other ideas? Thanks, Dana