How we were doing it before did not require us to have Outlook Express installed. We had Firefox 52.

How we were doing it before did not require us to have Outlook Express installed. We had Firefox 52.6 installed on our new Windows 10 Computers and we transferred the .dbx files from the Windows XP computers over to the new Windows 10 Computers. Then we could select the Import function from the Tools menu, select Outlook Express, and then point to the Directory on the new Windows 10 computer where the .dbx files were transferred to. This would then import all of the Folders and messages to a new Local Folder in TB called Outlook Express. The Outlook Import option is the one that makes you have the corresponding Program Installed but with the Outlook Express option all you had to do was point to the .dbx files. I have tried ImportExportTools NG, however it does not work with Outlook Express .dbx files. It does work for clients that are running Windows 7 and Windows Live Mail so we are using it for those clients. Moving them via dragging and dropping the .eml files is too time consuming as some of these clients have over 10 GB of email and 100s of different folders. For now we will just downgrade our Version back to 52.6 use the Built in Import function for Outlook Express and once completed Upgrade them back to 68.1. Thanks for trying!