WSAEINVAL - 10022 (0x2726)
An invalid argument was supplied.
Updated: Feb 21, 2026
Introduction
The WSAEINVAL error code is a generic error that indicates an invalid argument was supplied to a function call in the Windows Sockets (Winsock) API. This article provides detailed information about this error, its usage context, and developer interpretation.
Technical Meaning
The WSAEINVAL error code signifies that one or more of the arguments passed to a Winsock API function are not valid according to the function's requirements. The specific argument(s) causing the issue can vary depending on the function being called.
Error Details
- Error Name: WSAEINVAL
- Numeric Code: 10022 (0x2726)
- Short Description: An invalid argument was supplied to a function call.
Usage Context
This error can occur in various scenarios where the Winsock API is used, such as when setting socket options, binding addresses, or connecting sockets. The exact context depends on which specific function is being called and what parameters are provided.
Developer Interpretation
When encountering WSAEINVAL, developers should review the arguments passed to the relevant Winsock function. Common causes include:
- Invalid socket descriptor
- Incorrect option values
- Mismatched data types for function parameters
- Exceeding limits or constraints of the function
Related Errors
- EINVAL: A generic error indicating an invalid argument in non-Winsock API functions.
- WSAENOTSOCK: An invalid socket descriptor was used.
- WSAEPROTOTYPE: The wrong number of arguments were passed to a function call.
FAQ
Q: What does WSAEINVAL mean?
A: WSAEINVAL indicates that an invalid argument was supplied to a Winsock API function. It is a generic error and the specific cause can vary depending on the function called.
Q: How do I resolve this error?
A: Review the arguments passed to the relevant Winsock function and ensure they are valid according to the function's requirements.
Summary
WSAEINVAL is a generic error code indicating an invalid argument was supplied to a Winsock API function. Developers should carefully review their input parameters when encountering this error to identify and correct the issue.