0x0000071D
RPC_S_UNSUPPORTED_AUTHN_LEVEL
The requested authentication level is not supported.
win32decimal 1821RPC and COM
Matched as: the code as given (hex)
Log a case with no specific solution
Source: System Error Codes (1700-3999) - Win32 apps · CC-BY-4.0 (MicrosoftDocs/sdk-api, repo license verified 2026-10-09) · retrieved 2026-10-09