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WCM_E_HANDLERNOTFOUND
WCM_E_HANDLERNOTFOUND is the failure HRESULT 0x8022001E (signed decimal -2145255394, unsigned decimal 2149711902). Its severity bit is 1, facility is 34 (FACILITY_STATE_MANAGEMENT), and the facility-specific code field is 0x001E.
AllStat records the Windows SDK description as “Handler is not defined.”
Exact meaning and contract boundary
A referenced SMI handler is missing. The operation reached manifest compilation or runtime binding of metadata to the component handler responsible for a setting. The first branch to test is whether the handler declaration was omitted from the package; keep that separate from the possibility that the handler name changed without updating settings that reference it.
Where the result appears
At this boundary, capture handler reference and source line, then correlate it with all handler declarations in the compiled namespace. Assign ownership only after checking component package and target architecture.
Likely cause branches
- the handler declaration was omitted from the package
- the handler name changed without updating settings that reference it
- architecture-specific generation excluded the implementation metadata
- the component providing the handler is not present in the target image
Evidence that resolves the ambiguity
- handler reference and source line
- all handler declarations in the compiled namespace
- component package and target architecture
- module path or handler metadata expected by the schema
- servicing state of the owning Windows component
Diagnostic sequence
- restore the matching handler declaration/package
- align reference spelling and namespace scope
- ensure target branches include both settings and their handlers
- avoid substituting an unrelated handler with a similar name
- recompile and then verify handler module resolution separately
Retry and recovery
Retry after the definition or owning component becomes available. Repeated validation cannot bind an absent handler.
Difference from nearby WCM results
WCM_E_INVALIDHANDLERSYNTAX means the handler attribute is present but malformed. HANDLERNOTFOUND means a syntactically usable reference resolves to no handler.
Practical scenario
A minimal image removes a component package but retains customization metadata that references the component’s handler.
Logging and engineering guidance
For operational telemetry, retain component package and target architecture; also record module path or handler metadata expected by the schema. Preserve a redacted summary of servicing state of the owning Windows component; use a cryptographic hash when that evidence is a file, stream, or generated artifact.
Official Microsoft references.
- Microsoft: SMI error and success constants.
- Microsoft: Settings Management Infrastructure API.
- Microsoft: SMI interfaces.
- Microsoft: ISettingsContext::Deserialize.
- Microsoft: ISettingsResult::GetLine.
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