Windows 6.1 is ancient and has now got to the point it has it's own issues.

However if you open a command prompt (windows key + R and type cmd, press enter) Check there is a Thunderbird folder and it contains a profiles.ini file. open the file (double click should put it in notepad) and copy and paste the contents to a reply on the forum. That way we will be on the same page as to where Thunderbird is and thinks things are located. ( it may be meaningless to your. but all the registered profiles are listed and it will be a great help in determining if your old profile is registered before we try and help you find it.

Thank you, Matt, for your reply. I used to know DOS fairly well, but C:\Users\Jack>find "Thunderbird" produces nothing but a little flashing rectangle (cursor?)

C:\>find "Thunderbird" does the same. Clearly, I don't know how to check if Thunderbird folder and profile.ini exist.

'I know they do...'

I found the C drive Thunderbird folder and profile.ini somehow before, in a table somewhere. Can't track that down, and it seemed so simple at the time that I left no notes. I wasn't using DOS at that time. I backed up my whole system to our external teradrive.

This is killing me. I'm just a User! Is there really no reliable paid Thunderbird support available? Seems incredible. I have used, promoted, and supported Mozilla for years, but it's now beyond me, after several hours of struggling. (Whine, snivel)

When I get Thunderbird up and running again, I'll have 100+ emails that need to be transferred into it from my webmail server (Shaw.ca).

I just found and used %appdata% to track it down:

C:\Users\Jack\AppData\Roaming\Thunderbird\Profiles oap69bin.default-release

The contents of that file is attached.

New D drive installation attached

Looks like 2 profiles, smaller attached

Still without T-bird. Here's where my previous inbox is - on the C drive. How can I link that to my newly installed D-drive T-bird profile?

I guess the sent and other mailboxes are down the same path, no?

Thanks in advance, oh experts!

JBS

PROGRESS: Just finished connecting new T-bird to my server, and it auto downloaded all of the inbox , 543 EMAILS over the past T-birdless weeks. That's good. But the sent box isn't here, and "import" doesn't include my email server.

I should be able to cut and paste the old C drive Tbird mailboxes onto my big, empty SSD D-drive and then tell the new Thunderbird installation (profile?) to look for and store emails there from now on. ACCOUNT SETTINGS, SERVER SETTINGS, Local Directory is set for the old C-drive, but...I cannot find the new install feb. 2021 appdata/roaming/profiles path on my D drive, or any profiles folder dated later than 2019. So strange! Where might they be???

Thanks a million.

JBS

PS QUESTION: I've moved Tbird several times over the past decade. Multiple profiles, etc. on 2 drives, and transferred in from past computers. But I don't remember ever having so much trouble. Is this a new thing with Tbird, or is this early-onset dementia?