The NT Object Namespace itself indeed has no restrictions on filename characters except for "\", but once you reach a real filesystem like NTFS or FAT, the forb

The NT Object Namespace itself indeed has no restrictions on filename characters except for "\", but once you reach a real filesystem like NTFS or FAT, the forbidden characters continue to be blocked. https://projectzero.google/2016/02/the-definitive-guide-on-win32-to-nt.html https://projectzero.google/2016/02/the-definitive-guide-on-w...