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NS_S_TRACK_ALREADY_DOWNLOADED
Requested Windows Media track is already downloaded
NS_S_TRACK_ALREADY_DOWNLOADED is HRESULT 856929 (0x000D1361) from Windows Media. The documented description is “Track already downloaded.” In the Windows Media Player, Windows Media Format, DRM, or Media Foundation state machine, the value reports a nonfailure state that must not be collapsed into plain S_OK.
The high-level request that returned this result is complete only after the caller validates the represented condition.
What must be true before accepting it
Verify that the existing local asset matches the requested catalog item, version, and integrity requirements. That proof prevents usable partial state from being confused with full completion.
Where the status is encountered
- Windows Media Format source, writer, DRM, publishing-point, or installation operations;
- Media Foundation topology activation and remote-component setup;
Correct handling and recovery
Reuse or reveal the local copy after validating its identity and hash. Ask before replacing it, and download again only when the catalog version or local integrity differs.
A new attempt following it should be triggered by a meaningful transition, not merely by elapsed time.
Practical scenario
A sync operation requests a track already present in the library. The client verifies the catalog ID and checksum, then skips network transfer and updates only metadata.
Difference from nearby results
This is not a duplicate transfer failure; it reports that the desired postcondition may already exist locally.
Precise classification of it selects the correct wait, stop, retry, cleanup, or disclosure path.
References
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