WBEMMOF_E_MUST_BE_IN_OR_OUT

Arguments must have an **In** or **Out** qualifier.

Matched as: the code as given (hex)

HRESULT breakdown: code: 16423, customer: False, facility: 4, severity: failure (bit 31 set), ntstatus_wrapped: False

Source: WMI Error Constants · CC BY 4.0 · wording unchanged, formatting adapted for this site · retrieved 2026-10-24