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NS_E_WMPCORE_SOME_CODECS_MISSING
Diagnosing NS_E_WMPCORE_SOME_CODECS_MISSING
0xC00D10D1 maps to this result. Its actionable interpretation is a multi-stream item is missing one or more codecs even though other streams may be understood within the WMP playback core, graph and media-resource boundary; the producing mechanism is the core that resolves Player.URL, selects or builds a playback graph, chooses codecs and devices, prerolls media and advances between playlist items while reporting asynchronous errors.
Evidence that separates the result
| Field | What to record |
|---|---|
| Decisive check | Enumerate every stream and record which subtypes build successfully and which lack components |
| Artifact identity | Play state and transition immediately before failure for the playback core some codecs missing reproduction |
| Runtime state | Selected graph/source/filter or codec identity and version for this reproduction |
| Owning object | Audio/video device identity and driver generation for this reproduction |
| Lower-level result | Ordered ErrorItem queue with errorCode, errorContext and media object for this reproduction |
| Correlation | Player.URL, current media sourceURL and resolved final URL for this reproduction |
Representative case: Audio can be decoded while one video or auxiliary stream still lacks its codec. The example isolates only the producing component.
Focused test and correction
- Confirm the failure directly: enumerate every stream and record which subtypes build successfully and which lack components.
- After you supply the missing trusted components or transcode only the unsupported streams, recreate the owning WMP object and verify that the corrected generation completes.
Nearby results with different boundaries
| Result | Different boundary |
|---|---|
NS_E_WMPCORE_MEDIA_URL_TOO_LONG | The media URL exceeds the length accepted by the WMP core path |
NS_E_WMPCORE_DEVICE_DRIVERS_MISSING | Required audio/video device drivers or exposed device capabilities are unavailable to playback |
NS_E_WMPCORE_TEMP_FILE_NOT_FOUND | A temporary artifact created for download, conversion or staging disappeared before consumption |
Verification
Repeat the original operation with a fresh owning object after the identified precondition is corrected. Treat this result as resolved only when that same operation passes this stage; preserve any later HRESULT as a separate failure.
Technical references
- Windows Media Player SDK — API or format context for this HRESULT.
- Player MediaError event — documentation used to identify the producing boundary of this result.
- ErrorItem object — normative or platform material relevant to this result.
- Supported protocols and file types
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