ERROR_HV_NOT_ACKNOWLEDGED

The previous virtual interrupt has not been acknowledged.

Matched as: the code as given (hex)

HRESULT breakdown: code: 20, customer: False, facility: 53, severity: failure (bit 31 set), ntstatus_wrapped: False

Source: COM Error Codes (FWP, WS, NDIS, HyperV) (Winerror.h) · CC BY 4.0 · wording unchanged, formatting adapted for this site · retrieved 2026-10-24