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STATUS_SXS_SETTING_NOT_REGISTERED
The requested setting name is not known in this activation context
Activation contexts can expose settings defined by supported manifest schemas and registered component metadata. A name can be syntactically valid XML yet still be unavailable because the namespace, schema version, component identity, or target Windows version does not define it.
Check the producer of the manifest or query. Copying a setting from a newer operating system, another component family, or an undocumented internal manifest can leave the loader with no registered definition.
What to inspect
- Capture the exact setting name, XML namespace, component identity, and target OS build.
- Compare the manifest with the documented schema for that component and platform.
- Use sxstrace to identify which activation context and manifest supplied the request.
- Do not create arbitrary registry entries; “registered” here refers to side-by-side component metadata, not necessarily a normal registry value.
References
- Microsoft Open Specifications: NTSTATUS values
- Microsoft: side-by-side assemblies reference
- Microsoft: application manifests
- Microsoft: sxstrace command
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