0x00000641

ERROR_INSTALL_SERVICE_FAILURE

The Windows Installer Service could not be accessed. This can occur if the Windows Installer is not correctly installed. Contact your support personnel for assistance.

win32decimal 1601Windows Installer (MSI)

Matched as: the code as given (hex)

Log a case with no specific solution

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Source: System Error Codes (1300-1699) - Win32 apps · CC-BY-4.0 (MicrosoftDocs/sdk-api, repo license verified 2026-10-09) · retrieved 2026-10-09