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NS_E_INVALID_INDEX
NS_E_INVALID_INDEX — 0xC00D0011
The built-in message is only the immediate status; the useful boundary is that the caller supplied an index that is outside the collection, table, or server object currently being addressed.
The contract behind the code
Windows Media server and SDK calls operate on stateful collections and objects. In the context of invalid Windows Media index value, preserve the exact returning API, object identity, enumeration generation, and input representation; similar English messages can refer to different namespaces or lifecycle stages. Locate the first component changing state in invalid Windows Media index value and distinguish later summary errors.
Important boundary. An invalid index is not the same as an invalid object name; the indexed collection may be valid while the ordinal is not. Record the exact constant and returning API.
Diagnostic worksheet
| Record before retry | Use in verification |
|---|---|
| Returning API, index value, collection count, object generation, and server state | Shows whether the status is expected information, a warning, or the first failure in the event sequence. |
| Whether enumeration and lookup occurred against the same snapshot | Ties the message to one server object and one transition instead of a later retry. |
| Zero-based versus one-based assumptions in the caller | Separates configuration or identity from storage, parser, network, or lifecycle state. |
| Concurrent add/remove operations that can invalidate a cached index | Provides a stable before/after comparison for the proposed correction. |
Prefer identifiers, versions, counts, hashes, state transitions, and redacted paths; media content, credentials, keys, and user data are rarely needed in routine incident logs.
Useful comparisons
- Query the count immediately before lookup and test the last valid boundary. Keep media bytes, server identity, and unrelated publishing-point settings fixed.
- Replace index lookup with stable object identity where the API allows it. Use a disposable publishing point or maintenance window when the test can alter server or storage state.
- Serialize collection mutation during one controlled request. Retain a known-good stream, session, or server object so a broad restart is not mistaken for repair of the reported failure.
Retry only after one controlled server, object, route, storage, or input condition changed; an uncontrolled service restart creates a new execution context and is not proof that the original condition was transient.
Read the result in context
| Observed comparison | Interpretation |
|---|---|
| A known-good object succeeds through the same component | The platform path exists; concentrate on the production object, identity, metadata, or state captured above. |
| The control fails at the same first operation | Preserve server, storage, plug-in, topology, and network evidence before modifying media or publishing-point data. |
| The status changes after one deliberate adjustment | The diagnostic boundary moved; the replacement status now describes the next contract to investigate. |
A defensible fix
Correction: Validate bounds against the current collection and avoid retaining ordinals across topology or playlist changes. Keep the original server configuration, event sequence, object inventory, input hash, and topology snapshot so the change can be reversed and explained.
Accept the repair only when boundary tests reject only out-of-range values and production lookup remains stable during allowed collection changes. Repeat the original supported operation under the original identity and object state; a simplified media file, replacement server, new session, or different client is useful comparison evidence but not final regression proof.
Technical references
Use these Microsoft references for the formal contract and combine them with the exact server or catalog evidence from the incident: Check version-specific behavior against the Windows Media Services and SDK generation that produced the event.
- Microsoft Open Specifications: HRESULT values — defines the formal status or component boundary.
- Microsoft: Windows Media Services 9 Series SDK — documents the relevant API or lifecycle.
- Microsoft: Windows Media Services SDK architecture — provides the architecture, format, or protocol context.
- Microsoft: programming the Windows Media server object model — supports the controlled verification criteria.
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