Hi Ted, Unfortunately importing from Outlook is broken at present. The team are hoping to fix the issue in a future version of Thunderbird. I think this problem came about due to some major under-the-hood changes in Thunderbird 38. One workaround might be to temporarily downgrade to Thunderbird 31 (you'll find a download here: https://www.mozilla.org/en-US/thunderbird/releases/ ), import the PST from Outlook, and then upgrade to Thunderbird 38. If you have any other accounts set up in Thunderbird, it would a good idea to back up your profile using these instructions before trying this: [[Profiles TB]] Alternatively, and more straightforwardly, your email provider probably offer IMAP and SMTP servers. You can use these to set Thunderbird up and access your email, without importing from Outlook. Here's how: [[Manual Account Configuration]] This should mean you can access all your emails in Thunderbird, but possibly not any saved draft emails or your contacts. Let us know if either of these work!