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WINBIO_E_CANCELED
WINBIO_E_CANCELED means that the biometric operation was deliberately cancelled before completion. Cancellation may come from the caller, a UI flow ending, session shutdown, or an asynchronous operation being cancelled.
What to check
- Correlate the result with cancellation, session-close, timeout, or window-focus events in the application log.
- Do not treat the code as a failed biometric match; it means a result was not produced.
- In asynchronous code, wait for the final operation result and prevent the session from being closed while the callback is still pending.
Microsoft: WinBioCaptureSample
Microsoft: Windows Biometric Framework client error codes
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