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WINBIO_E_DATA_PROTECTION_FAILURE
WINBIO_E_DATA_PROTECTION_FAILURE is a protected-data failure inside the biometric service path. WBF is designed to isolate client applications from biometric data and to manage templates through service providers and storage adapters, so a decryption failure should be treated as protected state or key-context damage rather than a bad live sample.
Preserve the storage and machine context
- Identify whether the failure occurs while opening a database, reading an existing template, or processing a credential-related operation.
- Correlate the error with machine restore, profile migration, database replacement, or adapter/storage changes.
- Do not delete biometric databases as the first diagnostic action; preserve them and service events until the failure boundary is understood.
The WBF architecture deliberately keeps unprivileged applications away from raw biometric data and uses storage adapters for template persistence. Re-enrolling may create new protected state, but it can also destroy evidence about why existing data cannot be decrypted. First determine whether the failure is isolated to one identity, one database, or every biometric unit.
Biometric framework overview · Plug-in architecture
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