WSA_QOS_ESDMODEOBJ - 11029 (0x2B15)
An invalid shape discard mode object was found in the QOS provider specific buffer.
Updated: Feb 21, 2026
Technical Background
The error code WSA_QOS_ESDMODEOBJ with the numeric value 11029 and hexadecimal representation 0x2B15 indicates an issue related to Quality of Service (QoS) in Windows networking. Specifically, this error is associated with the QoS provider specific buffer where a shape discard mode object was found to be invalid.
Error Details
The term 'shape discard mode' refers to a mechanism used for managing traffic shaping and prioritization in network communications. An invalid shape discard mode object suggests that the system encountered an unexpected or improperly formatted configuration within the QoS provider's buffer, which is critical for proper operation of Quality of Service policies.
Common Causes
- Invalid parameter values: The input provided to the QoS-related API call may have contained incorrect or malformed data, leading to the invalid shape discard mode object being detected.
- Incorrect object type: The object expected by the system was not of the correct type, causing the error.
- Exceeding limits: There might be a limit on the number or complexity of QoS objects that can be configured, and an attempt to exceed this limit could result in such an error.
Real-World Context
This error is likely to occur during network configuration tasks where Quality of Service policies are being applied. It may also appear when troubleshooting issues related to network performance or traffic management.
Is This Error Critical?
The criticality of this error depends on the specific context in which it occurs. If QoS policies are essential for the operation of a particular application or service, then encountering this error could significantly impact system functionality and performance.
How to Diagnose
To diagnose this issue, developers should:
- Review the operation context: Ensure that all relevant parameters and objects used in the API call are correctly configured.
- Validate parameters: Verify that the input data provided to the QoS-related functions is valid and properly formatted.
- Confirm object types: Check that the expected shape discard mode objects match the actual objects being passed to the system.
How to Resolve
To resolve this issue, developers should:
- Correct parameter usage: Ensure that all parameters are correctly set according to the API documentation.
- Adjust operation context: If necessary, adjust the network configuration or QoS settings to ensure they align with the expected behavior of the system.
- Restore data: If corrupted data is suspected, restore it from a known good backup or source.
Developer Notes
Developers should be aware that this error can occur due to various factors, including incorrect API usage, malformed input data, and exceeding system limits. It is crucial to validate all inputs and ensure compliance with the QoS policy configuration requirements.
Related Errors
- WSA_QOS_INVALID_PARAMETER: This error might indicate a more general issue related to invalid parameters in QoS-related functions.
- WSA_QOS_OPERATION_NOT_SUPPORTED: This could suggest that certain operations are not supported by the current system configuration or environment.
FAQ
What does WSA_QOS_ESDMODEOBJ mean?
This error indicates an invalid shape discard mode object was found in the QoS provider specific buffer.
How can I prevent this error from occurring?
Ensure that all parameters and objects used in QoS-related API calls are correctly configured and validated before execution.
Can this error impact network performance?
Yes, if Quality of Service policies are critical for your application or service, an invalid shape discard mode object could affect network performance.
Summary
The WSA_QOS_ESDMODEOBJ error with code 11029 (0x2B15) is a specific issue related to the configuration and validation of QoS objects in Windows networking. It highlights problems with the shape discard mode object within the QoS provider's buffer, which can be caused by invalid parameters or incorrect object types. Developers should validate all inputs and ensure compliance with system limits to prevent this error from occurring.