What does HRESULT 0xC00D115B (NS_E_WMP_CONVERT_FILE_CORRUPT) mean?

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Description:

Windows Media Player cannot add the file to the library. The file might not be valid.%0

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NS_E_WMP_CONVERT_NO_RIGHTS_NOERRORURL	NS_E_WMP_CONVERT_PLUGIN_UNAVAILABLE_ERRORURL

NS_E_WMP_CONVERT_FILE_CORRUPT

Diagnosing NS_E_WMP_CONVERT_FILE_CORRUPT during Windows Media library import

NS_E_WMP_CONVERT_FILE_CORRUPT (0xC00D115B) is returned when the import converter found malformed or inconsistent source data.

Identify whether library insertion reached path validation, type detection, plug-in activation, rights evaluation or database update. Record what the Player had already completed because later retries often replace the original evidence. The specific rejected condition is the import converter found malformed or inconsistent source data.

Library-import boundary

AllStat already supplies the standard user-facing description for it; this custom block instead isolates the additional technical boundary. Earlier success in file lookup, network connection, parser creation or graph construction does not prove that the later the operation is valid.

Case-specific checkpoint: container parser result, byte offset, file length, header fields, checksums and whether another parser accepts the whole file. The controlled comparison for it is: remux or regenerate a short sample from the same source and import it through the identical path.

Closest distinction: NS_E_WMP_TAMPERED_CONTENT can arise from integrity or protection checks, not ordinary container damage.

Handler and source evidence

Capture	Why it matters for it
Object or resource	container parser result, byte offset, file length, header fields, checksums and whether another parser accepts the whole file
State snapshot	Record the Player openState/playState or operation phase, object identity and exact timestamp when this result was returned.
First lower result	Keep the earliest Win32, Winsock, COM, parser, codec, DRM or device result that appears before this result.
Comparison record	Use one known-good case that follows the same API, protocol and component path while changing only the rejected precondition.

Controlled import comparison

Start from the original call and log 0xC00D115B together with its object and operation phase.
Collect container parser result, byte offset, file length, header fields, checksums and whether another parser accepts the whole file before changing the machine.
Use this single-variable test: remux or regenerate a short sample from the same source and import it through the identical path.
repeat on a fresh object if the original predates a configuration, device or resource change.
validate the expected next operation, not just initial open or object creation.

Interpreting the library result

Retest outcome	Interpretation
Same this result on the same object	The governing state or value is unchanged, or the caller is reusing an object created before the relevant change.
Fresh object succeeds	Lifetime, cached configuration or stale playlist/graph state contributed to this result.
A later HRESULT appears	The rejected condition — the import converter found malformed or inconsistent source data — was cleared for it; diagnose the new code at its own layer.
Only one item or endpoint fails for it	The evidence favors resource-specific data, rights, routing or device state rather than a global Player failure.

Actions that obscure the cause

repairing library database records before validating the source bytes.
Do not discard the first occurrence by repeatedly invoking Play, open, save or retry; later events can replace its original state.
do not publish credentials, private URLs, license material or complete protected-content headers; retain only redacted identifiers, lengths, hashes and protocol fields.

Technical references

Retain before-and-after evidence for it so object recreation or content replacement is not mistaken for random retry success.

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