Update - after some more time, it seems that about a quarter to half of the folders have not populated with any e-mails. Which I do not understand.

Also, the empty folders will not allow me to "delete" them using the command in the drop down menu.

Any help on correcting what I did wrong and getting the Thunderbird install working again would be appreciated. There were about 35 gig of files transferred from the old system to the new system in the Thunderbird "Roaming" directory. The files for the Thunderbird file in the "Local" directory were less than 1% that size. Might this large size of the replacement Roaming files have anything to do with the odd behavior?

Thanks again,

Larry Reese

Those are two distinct Thunderbird versions per the profile per installation.

https://support.mozilla.org/en-US/kb/dedicated-profile-thunderbird-installation You will need to use the allow downgrade option to use your moved 32bit profile in a 64bit version.

Hello Matt:

I read up on the problem you identified, the 32 vs 64 bit installs. I think the best option for me (not highly skilled at command prompt usage to just install the 32 bit version on my destination computer - I would hate to screw something up). I looked everywhere I could for the 140.7.1esr 32-bit in English and could not find it. I found one on the Mozilla site and downloaded that but it was in some language I was completely unfamiliar with.

I found one .exe in in German on a mirror site in Germany but that was no help. Could you point me to an English version of the installer?

Thanks again,

LR

That date and time makes me think the copy comes from some sort of backup. How did you create your copy of Thunderbird's profile to move.

Pick your version and installer https://www.thunderbird.net/en-US/thunderbird/all/ don't just accept the default offering.

The commend line is not really all that important here as your command only needs to be used once and may not actually apply here as I think you have done something odd with the profile you are now using.to get those dates. They are just not right.

I used the method provided by a page on the Thunderbird website, copying the "Thunderbird" folder in the "Roaming" directory and pasting into the new installation on the destination W11 machine. Then, pasting the "Thunderbird" directory from the "Local" directory on the source machine into the "Local" directory on the destination installation. I don't remember exactly where I found that but it was in the help section here on the support forum.

I'm not exactly sure what dates you're talking about? The ones that were added to the local folders displayed in Thunderbird?

What I was trying to find, since you said the 64 vs 32 bit versions were causing the problems, was a 32-bit english version of 140.7.1esr. The one at the download page you linked to is the 64-bit (I believe) and does not give me an option to select 32 bit. I looked in the Thunderbird archive area and found the 32-bit version download, but it was not in english.

https://archive.mozilla.org/pub/thunderbird/releases/140.7.1esr/win32/en-US/

Thanks for the link David, that gave me exactly what I was after. Now both machines are running the 140.7.1esr 32-bit (new install on the new machine). I transferred the files/folders located in the instructional post below to the new install:

https://support.mozilla.org/en-US/kb/moving-thunderbird-data-to-a-new-computer

The mail accounts send and receive as they should, but the Local Folders are still a complete mess. The folders are all in there (plus a few new ones). None of them internal folders (can't drill down into them like I can on the old machine). About half the them have the correct number of e-mails in them, the rest are empty. Interestingly, when you check the "Properties" of the folders, a few of the empty ones say "0" e-mails size "0", while the rest say "unknown" e-mails, and "unknown" size. Another issue is that the ones with "unknown" in the properties cannot be deleted (hitting delete does nothing, they remain there, where they were).

I'm sure I did something wrong - all I'm trying to do is move the large number of local folders where some of my old mails organized on to the new machine, and readable.

Can anyone help?

If I have to, I can just keep the old machine around for a year or so in case I need any of that mail, but I'd much rather have it migrate.

Thanks again!

Larry

If the old profile is available, and the local folders are there, they can be easily imported into current profile. let me know and I'll assist.

Yes, the full profile is still active on the old machine. I am still using it as the primary while I get the new one fully tweaked. Please let me know what you think will do the trick. And I appreciate your help greatly.

Best regards,

Larry Reese