TxF (Transactional NTFS) はオワコン

TxF は将来サポートされなくなるらしい。

CopyFileTransacted の解説文より:

Microsoft strongly recommends developers utilize alternative means to achieve your application’s needs. Many scenarios that TxF was developed for can be achieved through simpler and more readily available techniques. Furthermore, TxF may not be available in future versions of Microsoft Windows. For more information, and alternatives to TxF, please see Alternatives to using Transactional NTFS.