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WINBIO_E_INVALID_DEVICE_STATE
WINBIO_E_INVALID_DEVICE_STATE means the sensor is present but not in a state that permits the requested operation. It can be initializing, suspended, locked by another session, disabled, or transitioning after a power event.
What to check
- Check that the device is enabled and that the Windows Biometric Service is running.
- Re-enumerate the unit after resume, reconnect, or driver restart rather than using stale session state.
- For applications, follow the required operation order and release unit locks when finished.
Microsoft: Sensor Adapter Functions
Microsoft: Windows Biometric Framework client error codes
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