This is the first time since 10 years that I need help with Thunderbird. I got a new computer and downloaded and installed Thunderbird 128.4.1esr (64-Bit). Then I tried to transfer my e-mail files from my old computer (Thunderbird 128.4.0esr) by the export function using the profile directory function, got a directory named u5n188z6.default (the file is somewhere about 35 GB) . I also could start the import function on the new computer (import from profle "default") and the files were imported to the new local directory posion. However, nothing could be seen within the Thunderbird home page. Could you, please, provide help with this problem? Greetings from Vienna, Winfried Scheirer