ERROR_SXS_DUPLICATE_IID - 14024 (0x36C8)
Two or more components referenced directly or indirectly by the application manifest have proxies for the same COM interface IIDs.
Updated: Feb 21, 2026
Technical Background
The error code ERROR_SXS_DUPLICATE_IID is a specific Windows error that indicates an issue with the Component Object Model (COM) interfaces defined in application manifests. This error typically arises when multiple components, either directly or indirectly referenced by an application manifest, have proxies for the same COM interface IIDs.
Error Details
The numeric value of this error code is 14024 and its hexadecimal representation is 0x36C8. The error message suggests that there are duplicate interface identifiers (IIDs) in the context of a manifest, which can lead to conflicts or inconsistencies within the application's runtime environment.
Common Causes
This error often occurs due to incorrect configuration or misalignment between different components. Specifically, it may be caused by:
- Invalid Manifests: Incorrectly defined or duplicated interface IIDs in one or more manifests.
- Component Interdependencies: Multiple components referencing the same COM interfaces without proper unique identifiers.
Real-World Context
In a typical scenario, an application might have multiple components that need to interact with each other through COM interfaces. If these components are not properly configured, they may inadvertently reference the same IIDs, leading to conflicts during runtime.
Is This Error Critical?
The criticality of this error depends on the specific context in which it occurs. While it does not necessarily indicate a severe system failure, it can lead to application instability or unexpected behavior if left unresolved.
How to Diagnose
To diagnose this issue, developers should:
- Review Manifests: Carefully examine all manifests involved in the application to identify any duplicated interface IIDs.
- Validate Parameters: Ensure that parameters passed during COM interface calls are correct and consistent across components.
- Confirm Object Types: Verify that object types being referenced match their expected definitions within the manifest files.
How to Resolve
To resolve this issue, developers should:
- Correct Manifests: Modify manifests to ensure unique IIDs for each interface. This can involve renaming or redefining interfaces as necessary.
- Adjust Operation Context: Ensure that all components are correctly configured and do not inadvertently reference the same COM interfaces.
- Restore Data: If data corruption is suspected, restore from a known good backup if available.
Developer Notes
Developers should be cautious when working with COM interfaces to ensure that each component has unique identifiers. This can prevent conflicts and improve application stability.
Related Errors
ERROR_SXS_MISSING_IID(14023, 0x36C7): Indicates a missing interface identifier in the manifest.ERROR_SXS_CORRUPT_POLICY(14059, 0x38D3): Suggests corruption or misconfiguration of application policies.
FAQ
Q: What does ERROR_SXS_DUPLICATE_IID mean?
A: It indicates that two or more components referenced by the application manifest have proxies for the same COM interface IIDs.
Q: How can this error be resolved?
A: Correct manifests to ensure unique interface identifiers and adjust component configurations as necessary.
Summary
ERROR_SXS_DUPLICATE_IID is a specific Windows error that highlights issues with duplicate COM interface IIDs in application manifests. By carefully reviewing and adjusting manifest files, developers can resolve this issue and maintain the stability of their applications.