HRESULT 0x8009803A (WINBIO_E_INVALID_PROPERTY

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the requested WinBio property type is not valid for the property operation.

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WINBIO_E_EVENT_MONITOR_ACTIVE	WINBIO_E_INVALID_PROPERTY_ID

WINBIO_E_INVALID_PROPERTY_TYPE

WINBIO_E_INVALID_PROPERTY_TYPE means the WINBIO_PROPERTY_TYPE argument itself is incorrect. WinBioGetProperty and WinBioSetProperty distinguish this from an invalid property ID and from a valid property that the target object does not support.

Validate the type/ID pair before the call

Log both PropertyType and PropertyId numerically; the ID alone is not enough to diagnose the request.
Check whether the selected API supports session, unit, template, or account property categories in the target Windows SDK.
Do not translate an arbitrary application enum directly into WINBIO_PROPERTY_TYPE without range and mapping checks.

For example, Microsoft documents that WinBioSetProperty currently requires WINBIO_PROPERTY_TYPE_ACCOUNT. A property can therefore have a meaningful ID in documentation yet still fail when used under the wrong property category. Fix the caller’s property addressing rather than retrying the sensor operation.

WinBioGetProperty · WinBioSetProperty

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