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NS_E_INVALID_QUERY_OPERATOR
NS_E_INVALID_QUERY_OPERATOR in a format, graph or streaming trace
For this HRESULT (0xC00D32CF) the decisive boundary is the metadata query uses an operator not accepted by the schema. Diagnose the failing metadata operation 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 for this diagnosis. In the case of this result, preserve the earliest lower-level result because wrappers can map several different causes to the same HRESULT before retrying.
Nearby results are not interchangeable
Main distinction: metadata lookup, schema validation and edit capability are separate checkpoints even when the same attribute is involved in the diagnostic record.
| Nearby HRESULT | How to compare it |
|---|---|
NS_E_PROPERTY_READ_ONLY | The metadata provider rejected this operation checkpoint |
NS_E_TABLE_KEY_NOT_FOUND | The metadata table does not contain the requested key |
NS_E_INVALID_QUERY_PROPERTY | The metadata query references a property outside the searchable schema |
Failure anatomy
that metadata stage is reached when the metadata query uses an operator not accepted by the schema. The caller must not assume that the next filter, packet, session or metadata state exists after this result.
Use enumerate the provider schema, issue the smallest valid query, and add the disputed key, property or operator only after that query succeeds as the negative control before retrying. A later HRESULT means this checkpoint was cleared and the new result belongs to a different stage in the diagnostic record.
Read-only metadata experiment
- Log
0xC00D32CF, this result, the exact operation and the first failure time when isolating this failure. - Preserve provider and schema identifiers, table or class name, query property, operator, key type, input value and the provider diagnostic returned before this HRESULT at this checkpoint.
- Do not reuse a graph, session, reader or metadata object created before the relevant configuration or resource changed.
- Perform one isolated test: enumerate the provider schema, issue the smallest valid query, and add the disputed key, property or operator only after that query succeeds.
- 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 reported boundary is fixed.
- Confirm the expected next state and retain any new HRESULT as a separate downstream result before retrying.
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 operation. |
| Decisive values | Provider and schema identifiers, table or class name, query property, operator, key type, input value and the provider diagnostic returned before this HRESULT when isolating this failure. |
| Object generation | Note when the reader, writer, graph, URL object, streaming session or metadata provider was created; stale state can reproduce this result 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 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 original request 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 before retrying. |
| The call advances to another HRESULT | the recorded metadata state boundary was cleared. Diagnose the new code at its own format, graph, URL, network or metadata stage when isolating this failure. |
| Only one resource fails | The evidence favors content, URL, publishing point, stream, attribute or object-specific state rather than a global outage at this checkpoint. |
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 for this diagnosis. Record redacted identifiers, lengths, hashes and protocol fields needed to reproduce the original boundary.
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 in the diagnostic record.
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