If you try to register fingerprint for Windows Hello Setup using Sign-in Options page, Windows 10 shows the following error message:
That fingerprint has already been set up on another account. Try a different finger.
[Solved] How to Fix Windows Hello Setup Error “fingerprint has already been set up on another account”
Step 1: Press Windows + R keys together to open the Run dialogue box.
Step 2: Type services.msc
and press Enter key to open the Service Manager.
Step 3: Locate the Windows Biometric Service.
Locate the Windows Biometric Service
Step 4: Right-click on Windows Biometric Service and select Stop option from the context menu.
Step 5: Go to the following folder path: C:\Windows\System32\WinBioDatabase
Step 6: Delete all files present in this folder.
Step 7: Go back to Service Manager, right-click on Windows Biometric Service and select Start option to start the service.