Decoding Windows Error Codes — The Three-Layer Structure of Win32 Errors, HRESULT, and NTSTATUS (archived 2026-08-30)

Abstract

When 0x80004005 appears, decompose it before you search. This article covers the three-layer structure of Win32 errors, HRESULT, and NTSTATUS, the most important pattern that 0x8007xxxx is a wrapped Win32 error, and how to look codes up with err.exe and PowerShell. Archived version of https://comcomponent.com/en/blog/windows-error-codes-win32-hresult-ntstatus/, as published on 2026-08-30. The live article is maintained and may change after this date. First published 2026-08-20.