WSA_QOS_EUNKOWNPSOBJ - 11024 (0x2B10)
An unrecognized object was found in the QOS provider-specific buffer.
Updated: Feb 21, 2026
Technical Background
The WSA_QOS_EUNKOWNPSOBJ error code, with the numeric value 11024 (0x2B10), indicates that an unrecognized object was found in the Quality of Service (QoS) provider-specific buffer. This error is specific to Windows Sockets API (Winsock) and pertains to QoS-related operations.
Error Details
The WSA_QOS_EUNKOWNPSOBJ error typically arises when a network application attempts to use a QoS object that the underlying QoS provider does not recognize or support. This can occur during the setup of Quality of Service policies for network traffic, where the specified QoS parameters are not valid or do not match any known objects.
Common Causes
- Invalid QoS Object: The application may have attempted to use a QoS object that is not recognized by the QoS provider. This could be due to incorrect parameter values or an unsupported operation.
- Incorrect Usage Context: The context in which the QoS object was used might not align with the capabilities of the QoS provider.
Real-World Context
This error can occur when setting up Quality of Service policies for network traffic, such as configuring bandwidth allocation or prioritization. It is important to ensure that all QoS parameters are correctly specified and supported by the underlying QoS provider.
Is This Error Critical?
The criticality of this error depends on the application's requirements. If the application relies heavily on Quality of Service features for network performance, then this error could be significant. However, if the application does not depend on such features, it might have minimal impact.
How to Diagnose
To diagnose WSA_QOS_EUNKOWNPSOBJ, follow these steps:
- Review Operation Context: Ensure that the QoS operation is being performed in an appropriate context where Quality of Service policies are supported.
- Validate Parameters: Verify that all parameters passed to the QoS functions are valid and correctly specified.
- Confirm Object Types: Check that the types of objects used (e.g., interfaces, endpoints) are recognized by the QoS provider.
How to Resolve
To resolve WSA_QOS_EUNKOWNPSOBJ, consider the following actions:
- Correct Parameter Usage: Ensure that all parameters passed to QoS functions are valid and correctly specified.
- Adjust Operation Context: If the operation is being performed in an unsupported context, adjust the environment or application configuration to ensure compatibility with the QoS provider.
Developer Notes
Developers should be aware of the specific QoS objects supported by their target environment. This includes understanding the capabilities of the underlying network infrastructure and ensuring that all QoS parameters are correctly configured.
Related Errors
- WSA_QOS_EOBJNOTFOUND: Indicates that a required object was not found.
- WSA_QOS_EOPNOTSUPP: Indicates that an operation is not supported by the QoS provider.
FAQ
What does WSA_QOS_EUNKOWNPSOBJ mean?
WSA_QOS_EUNKOWNPSOBJ indicates that an unrecognized object was found in the QoS provider-specific buffer, typically due to invalid or unsupported parameters.
How can I prevent this error?
Ensure that all QoS parameters are correctly specified and supported by the underlying QoS provider. Validate input data and operation context before performing Quality of Service operations.
Summary
The WSA_QOS_EUNKOWNPSOBJ error code is specific to Windows Sockets API (Winsock) and indicates an unrecognized object in the QoS provider-specific buffer. This error can be caused by invalid parameters or incorrect usage contexts. Developers should ensure that all QoS operations are performed within a compatible environment and with correctly specified parameters.