What does Windows error code 10092 (WSAVERNOTSUPPORTED) mean?

Status / error code:		Category:

Constant name:
Source:		Operating System:
Description: WSAVERNOTSUPPORTED means that the requested Winsock version cannot be provided by the installed implementation.

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WSASYSNOTREADY	WSANOTINITIALISED

WSAVERNOTSUPPORTED

WSAVERNOTSUPPORTED means that the requested Winsock version cannot be provided by the installed implementation. It is an initialization compatibility error, not a network connection error.

Record the version requested in WSAStartup and the version returned by the implementation. Request a version the target system supports or adjust the application compatibility requirement before diagnosing DNS, routing, or peer connectivity.

How version negotiation works

WSAStartup receives the requested version and returns the version actually supported in the WSADATA structure. A program must verify that the returned version is acceptable before using Winsock functions that depend on it.

What to check

Request the intended Winsock version with MAKEWORD.
Validate wVersion and wHighVersion instead of assuming that version 2.2 is available.
Do not continue to create sockets after initialization has failed.

Microsoft: WSAStartup

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