0x000006B5
RPC_S_UNKNOWN_IF
The interface is unknown.
win32decimal 1717RPC 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