Protecteduserkey.bin !new! -

C:\Windows\ServiceProfiles\LocalService\AppData\Local\Microsoft\Ngc\ The Ngc (Next Generation Credential) folder uses this file for Windows Hello PINs and biometric authentication.

protecteduserkey.bin is a quiet sentinel of Windows’ modern security architecture. It exemplifies the shift from software-based encryption to key protection. While ordinary users will never need to know it exists, security professionals should recognize it as an artifact of a well-protected Windows system—one where even kernel compromises cannot easily strip away a user’s private keys. protecteduserkey.bin