0x80070643: ERROR_INSTALL_FAILURE (Win32 1603)

Windows Error Code Lookup: Decode Windows error codes: Win32, HRESULT (0x80070005), NTSTATUS, Windows Update, msiexec and blue-screen stop codes, with what to check next.

Paste the number from an error dialog, event log, script or setup log: 0x80070005, 80070005, -2147024891, 1603, 0xC0000005, a stop code like 0x7E, a name like E_ACCESSDENIED, or a few words. You get every way Windows could mean that number (an HRESULT often wraps a Win32 error, so 0x80070005 is "Access is denied" too), its parts decoded, and what to check for the common ones. Names and messages come from the Windows SDK headers and Windows' own message tables; see Microsoft's System Error Codes and [MS-ERREF] for the full references.

Try: 0x80070005, 1603, 0xC0000005, 0x800F081F, 0x8024402C, 0x7E, access denied

0x80070643 = 2,147,944,003 = -2147023293

HRESULT 0x80070643

No name of its own: it's the Win32 error below, as an HRESULT.

An installer failed (msiexec 1603 as an HRESULT). From Windows Update it's often a security update for the recovery environment (WinRE) that needs more room in the recovery partition than there is; Microsoft's KB article for the update has the steps. For other updates, check C:\Windows\Logs\CBS\CBS.log.

Wraps the Win32 error: 1603ERROR_INSTALL_FAILURE: Fatal error during installation.

Severity (bit 31)	1: failure
Customer (bit 29)	0: Microsoft
NTSTATUS inside (bit 28)	0
Facility	7 (0x007) WIN32
Code	1603 (0x0643)