Q: After updating to macOS Catalina, Bitlocker encrypted drive is not recognized by M3 Bitlocker Loader, how to solve it?

A: It is caused by the security feature in macOS. Please open System Preferences > Security & Privacy > Privacy > Full Disk Access > Allow M3 Bitlocker Loader

Full Disk Access is a new security feature in macOS that requires some applications to be given full permission to access a user's files.

Q: The installed version of FUSE is too old for the operating system.

A: Please reinsall fuse.

Q: There is no Allow option in Security & Privacy when allowing system extension.

A: It doesn't matter if you have installed M3 Bitlocker Loader before.