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| ERROR_CRED_REQUIRES_CONFIRMATION | WINBIO_E_INVALID_UNIT |
WINBIO_E_UNSUPPORTED_FACTOR
WINBIO_E_UNSUPPORTED_FACTOR means the caller asked the Windows Biometric Framework (WBF) to use a biometric factor that the installed framework, sensor, or driver does not support. A fingerprint reader, for example, cannot be used as an iris or facial-recognition unit.
What to check
- Enumerate the biometric units and their supported factors before opening the session.
- For a Windows Hello problem, confirm that the device exposes the required biometric hardware and that its vendor driver is installed.
- For an application, do not infer the factor from a device name; use the factor returned by WBF enumeration.
Microsoft: Windows Biometric Framework client error codes
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