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MK_E_INTERMEDIATEINTERFACENOTSUPPORTED
Intermediate operation failed
When Windows returns MK_E_INTERMEDIATEINTERFACENOTSUPPORTED—HRESULT 2147746279, 0x800401E7, signed -2147221017—The documented description is “Intermediate operation failed”. The actionable meaning is an intermediate object in a composite binding path does not support the interface required to continue. The surrounding operation is resolving successive components of a composite moniker.
Precise failure point
- Confirm that this result came from resolving successive components of a composite moniker, rather than from cleanup or a wrapper that ran afterward.
Diagnostic evidence
- Log each composite component and interface requested at that boundary.
- Bind components incrementally to identify the first incompatible object.
- Record server versions and aggregation identity.
Resolution path
- Identify the exact object, method, and lifecycle phase involved in resolving successive components of a composite moniker.
Distinct causes
- It can result when the left-side object lacks the interface needed by the next moniker component.
- It can result when a component order is valid syntactically but semantically incompatible.
- It can result when an upgraded server removed or changed an intermediate interface assumed by the client.
Retry policy
Correction. construct a compatible moniker chain or obtain an intermediate object that implements the documented interface. Retry condition. Retry only after changing the chain or component version; a final target retry cannot bypass the failed intermediate step. Before repeating the operation, release partial monikers and bound interfaces, unregister only owned Running Object Table entries, and abandon a bind context whose deadline or parameters no longer match the retry.
Practical scenario
A file moniker binds successfully, but the following custom item moniker expects an interface the document object does not implement; selecting the correct item-moniker class resolves the chain.
Difference from related HRESULTs
E_NOINTERFACE can occur on any object; it identifies the failed interface as part of moniker composition.
Developer and administrator guidance
References
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