HRESULT 0x80098050 (WINBIO_E_CALIBRATION_BUFFER_TOO

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calibration data exceeds the size accepted by the biometric calibration path.

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WINBIO_E_CALIBRATION_BUFFER_TOO_SMALL	WINBIO_E_CALIBRATION_BUFFER_INVALID

WINBIO_E_CALIBRATION_BUFFER_TOO_LARGE

WINBIO_E_CALIBRATION_BUFFER_TOO_LARGE indicates oversized calibration data. The engine adapter receives MaxBufferSize from WBF and must report the number of bytes actually written; that value is explicitly required not to exceed the maximum available space.

Audit every calibration size calculation

Compare the engine’s required payload size with MaxBufferSize before writing calibration data.
Check integer conversions between structure counts, element sizes, SIZE_T, and any device-protocol length fields.
Verify that a format/version mismatch is not making one adapter serialize a larger record than the other side expects.

The calibration buffer memory belongs to WBF, and adapters must not retain pointers to it after the callback returns. Allocating a private larger buffer and passing stale pointers around does not fix the framework contract. When the required payload cannot fit, fail deterministically and log the selected calibration format plus expected and available sizes.

Engine calibration data callback · Sensor calibration data callback

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