WSAEOPNOTSUPP - 10045 (0x273D)
The attempted operation is not supported for the type of object referenced.
Updated: Feb 21, 2026
Technical Meaning
The WSAEOPNOTSUPP error code indicates that the operation attempted is not supported for the type of object referenced. This can occur in various contexts, particularly when dealing with network programming and socket operations.
Error Details
- Error Name: WSAEOPNOTSUPP
- Numeric Code: 10045 (0x273D)
- Short Description: The attempted operation is not supported for the type of object referenced.
This error typically arises when a function or method is called with parameters that are incompatible with the current state or type of the object. For example, attempting to bind a socket to an address that has already been bound could trigger this error.
Usage Context
WSAEOPNOTSUPP can be encountered in various scenarios within network programming and socket operations. It is commonly associated with functions such as bind, connect, listen, and others, which may not support certain operations based on the current state of the object or the type of operation being attempted.
Developer Interpretation
Developers should interpret this error code to mean that the specific operation they are trying to perform is not supported by the current context. This could be due to a variety of reasons, such as an invalid parameter value, incorrect object type, exceeding limits, or unsupported operations in the current state.
Related Errors
- WSAEINVAL: Invalid argument passed to a function.
- WSAEADDRINUSE: Address already in use; cannot bind.
- WSAEACCES: Permission denied. The operation requires higher privileges than are held by the user.
These errors can provide additional context when troubleshooting issues related to network programming and socket operations.
FAQ
Q: What does WSAEOPNOTSUPP mean?
A: WSAEOPNOTSUPP indicates that the operation attempted is not supported for the type of object referenced. This error typically occurs when a function or method is called with parameters that are incompatible with the current state or type of the object.
Q: How can I resolve WSAEOPNOTSUPP?
A: To resolve WSAEOPNOTSUPP, ensure that the operation you are attempting is supported by the current context. Check the documentation for the specific function or method to understand its requirements and constraints.
Summary
WSAEOPNOTSUPP is a specific error code indicating an unsupported operation in the Windows API, particularly within network programming contexts. Developers should carefully review their operations and ensure they are compatible with the current state of the object to avoid this error.