I recently encountered a “Fingerprint is already enrolled” error when trying to register a finger print on my Lenovo W530.

I tried to clear the fingerprint data in BIOS, but that didn’t work. After more scouring on the internet I found this question on TechNet.

Turned out all I needed to do to get it working was to delete the C:\Windows\System32\WinBioDatabase\[GUID].DAT file.