Despite its generic name, Wii Backup Manager (often abbreviated WBM) is the most robust 64-bit compatible solution available. While it runs as a 32-bit application, it includes native 64-bit drivers and is fully stable on x64 architectures.
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How to use it:
Around 2009, Wii homebrew developers created WBFS to store Wii games on USB drives without wasting space on dummy data. Tools like WBFS Manager 3.0/4.0 (by AlexDP) became popular on Windows because they offered a clean GUI to: wbfs manager 64 bits
Problem: These tools were compiled as 32-bit, used older .NET Framework (2.0/3.5), and were never updated for 64-bit Windows. Wait for the transfer