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NS_E_METADATA_NOT_AVAILABLE
NS_E_METADATA_NOT_AVAILABLE in a format, graph or streaming trace
For this HRESULT (0xC00D32DA) the decisive boundary is the requested metadata item is not available from the active source. Diagnose the metadata not available metadata check directly and avoid inferring the cause only from the visible playback symptom.
Windows Media metadata can be file-level or stream-level and can come from an ASF header, computed attributes, an online/cache provider or a format-specific metadata handler. Read capability, edit capability, locale and query schema are independent properties. In the case of this result, preserve the earliest lower-level result because wrappers can map several different causes to the same HRESULT.
Nearby results are not interchangeable
Main distinction: provider unavailability differs from a cache miss, which says only that the offline copy is absent.
| Nearby HRESULT | How to compare it |
|---|---|
NS_E_METADATA_LANGUAGE_NOT_SUPORTED | Compare the owning API and first rejected value; it belongs to a neighboring checkpoint, not automatically to the same cause as this result. |
NS_E_METADATA_NO_RFC1766_NAME_FOR_LOCALE | Use object state and operation order to decide which code is authoritative when both appear in one trace. |
NS_E_METADATA_CACHE_DATA_NOT_AVAILABLE | Retain this result separately if it appears only after the condition has cleared. |
Failure anatomy
The metadata not available metadata check is reached when the requested metadata item is not available from the active source. The caller must not assume that the next filter, packet, session or metadata state exists after this result.
Use enumerate available attributes and identifiers for the same file and stream before requesting the missing item by its exact key as the negative control. A later HRESULT means this checkpoint was cleared and the new result belongs to a different stage.
Read-only metadata experiment
- Log
0xC00D32DA, it, the exact operation and the first failure time. - Preserve file or content identifier, metadata provider, stream number, attribute name and type, locale, read/edit capability and the first metadata API result.
- Do not reuse a graph, session, reader or metadata object created before the relevant configuration or resource changed.
- Perform one isolated test: enumerate available attributes and identifiers for the same file and stream before requesting the missing item by its exact key.
- Repeat through the same API and protocol path; a different player or local-copy test is useful only as a comparison, not as proof that the metadata not available metadata check is fixed.
- Confirm the expected next state and retain any new HRESULT as a separate downstream result.
Attribute, schema and locale evidence
| Capture | Why it matters |
|---|---|
| Owning call | Record the API method, object identity, thread or callback and timestamp for the metadata not available metadata check. |
| Decisive values | file or content identifier, metadata provider, stream number, attribute name and type, locale, read/edit capability and the first metadata API result. |
| Object generation | Note when the reader, writer, graph, URL object, streaming session or metadata provider was created; stale state can reproduce it after configuration has changed. |
| First nested result | Keep the earliest codec, COM, socket, DNS, parser or provider status before it; later UI messages are less specific. |
| Comparison case | Use one known-good resource that exercises the same the metadata not available metadata check while changing only the rejected precondition. |
Interpret the provider response
| Retest result | Interpretation |
|---|---|
| The identical call still returns the code | The values governing the metadata not available metadata check are unchanged, or the caller is still using an older object generation. |
| A fresh object succeeds | Lifetime or cached state contributed to it; correct object recreation instead of applying a machine-wide workaround. |
| The call advances to another HRESULT | the metadata not available metadata check boundary was cleared. Diagnose the new code at its own format, graph, URL, network or metadata stage. |
| Only one resource fails | The evidence favors content, URL, publishing point, stream, attribute or object-specific state rather than a global outage. |
Misleading actions
- deleting metadata caches or tags before preserving the provider, attribute key, type and locale that produced the result.
- Do not erase the first occurrence by repeatedly retrying; callbacks and reconnects can replace the useful state with a later wrapper error.
- Do not publish credentials, protected-content material or complete private URLs. Record redacted identifiers, lengths, hashes and protocol fields needed to reproduce the metadata not available metadata check.
Technical references
- Windows Media metadata features
- Retrieving metadata attributes
- Setting metadata attributes
- Metadata editor object
- Microsoft HRESULT registry
Treat it as resolved only when the same API path crosses this checkpoint; success through a different player or cached copy is merely supporting evidence.
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