What's the right way to migrate a Thunderbird profile from a Mac to Windows 10, in a way that preserves multiple email accounts and identities? I use Thunderbird 60.6.1 on macOS 10.14. I have 9 email accounts with about 20 email identities between them. I would like to copy all these to a Thunderbird profile in a Windows 10 VM that I'm running on the same machine under VMware, so that I can access all my email accounts in Thunderbird under both OSes. How can I do this? I have tried copying the contents of my ~/Library/Thunderbird/Profiles/<whatever>.default profile directory over to the %USERPROFILE%/AppData/Local/Thunderbird/Profiles/<whatever>.default on the Windows VM. It kind of works, in that mail appears there and I can log in to my mail server, but only 1 of my 9 email accounts shows up on the receiving end. I have tried doing the transfer both with a .zip file of my profile that I transferred over using Dropbox and VMware shared folders, and a FAT-formatted USB drive that I first attached to the Mac side and then the Windows side. When I did the zip file, I got a couple errors when extracting it. No errors when copying the profile over using the USB drive. But same results with both procedures: only one (my primary) email account shows up on the receiving Windows side. Any ideas?