HRESULT 0xC00D132D (NS_E_CURLHELPER_NOTADIRECTORY): meaning

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Description:

The URL is not a directory.%0

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NS_E_CURL_INVALIDPORT	NS_E_CURLHELPER_NOTAFILE

NS_E_CURLHELPER_NOTADIRECTORY

`NS_E_CURLHELPER_NOTADIRECTORY`: evidence, boundary and retest

The useful reading of NS_E_CURLHELPER_NOTADIRECTORY (0xC00D132D) is not “media failed” but an operation requiring a directory URL received a file-like URL. This places the failure at the notadirectory URL check and narrows the evidence to collect before another attempt changes state.

Before any socket is opened, the player decomposes a URL into scheme, authority, host, port, path and escaped data before closing the notadirectory incident. It may also combine a relative reference with a base URL or convert a file URL into a path; each operation has a different validity rule in the notadirectory diagnostic record. In the case of NS_E_CURLHELPER_NOTADIRECTORY, preserve the earliest lower-level result because wrappers can map several different causes to the same HRESULT when isolating the notadirectory case.

Preserve the raw and parsed URL

Capture	Why it separates `NS_E_CURLHELPER_NOTADIRECTORY`
Owning call	Record the API method, object identity, thread or callback and timestamp for the notadirectory URL check.
Decisive values	the original unmodified string, character count, encoding, base URL if any, parsed scheme, host, port and path, plus required and supplied output-buffer lengths while tracing the notadirectory path.
Object generation	Note when the reader, writer, graph, URL object, streaming session or metadata provider was created; stale state can reproduce `NS_E_CURLHELPER_NOTADIRECTORY` after configuration has changed.
First nested result	Keep the earliest codec, COM, socket, DNS, parser or provider status before `NS_E_CURLHELPER_NOTADIRECTORY`; later UI messages are less specific.
Comparison case	Use one known-good resource that exercises the same the notadirectory URL check while changing only the rejected precondition.

Failure anatomy

The notadirectory url check is reached when an operation requiring a directory URL received a file-like URL. The caller must not assume that the next filter, packet, session or metadata state exists after NS_E_CURLHELPER_NOTADIRECTORY.

Use repeat with a URL whose final path component and trailing separator unambiguously denote a directory as the negative control at the notadirectory checkpoint. A later HRESULT means this checkpoint was cleared and the new result belongs to a different stage while tracing the notadirectory path.

Nearby results are not interchangeable

Main distinction: URL syntax errors occur before server DNS, proxy selection or streaming-session creation during a controlled notadirectory retest.

Nearby HRESULT	How to compare it
`NS_E_CURL_CANTWALK`	Compare the owning API and first rejected value; it belongs to a neighboring checkpoint, not automatically to the same cause as `NS_E_CURLHELPER_NOTADIRECTORY`.
`NS_E_CURL_INVALIDPORT`	Use object state and operation order to decide which code is authoritative when both appear in one trace before closing the notadirectory incident.
`NS_E_CURLHELPER_NOTAFILE`	Retain this result separately if it appears only after the `NS_E_CURLHELPER_NOTADIRECTORY` condition has cleared.

One-component URL experiment

Log 0xC00D132D, NS_E_CURLHELPER_NOTADIRECTORY, the exact operation and the first failure time when isolating the notadirectory case.
Preserve the original unmodified string, character count, encoding, base URL if any, parsed scheme, host, port and path, plus required and supplied output-buffer lengths at the notadirectory checkpoint.
Do not reuse a graph, session, reader or metadata object created before the relevant configuration or resource changed while tracing the notadirectory path.
Perform one isolated test: repeat with a URL whose final path component and trailing separator unambiguously denote a directory during a controlled notadirectory retest.
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 notadirectory URL check is fixed.
Confirm the expected next state and retain any new HRESULT as a separate downstream result before closing the notadirectory incident.

What the parser result proves

Retest result	Interpretation for `NS_E_CURLHELPER_NOTADIRECTORY`
The identical call still returns the code	The values governing the notadirectory URL check are unchanged, or the caller is still using an older object generation.
A fresh object succeeds	Lifetime or cached state contributed to `NS_E_CURLHELPER_NOTADIRECTORY`; correct object recreation instead of applying a machine-wide workaround when isolating the notadirectory case.
The call advances to another HRESULT	The the notadirectory URL check boundary was cleared. Diagnose the new code at its own format, graph, URL, network or metadata stage while tracing the notadirectory path.
Only one resource fails	The evidence favors content, URL, publishing point, stream, attribute or object-specific state rather than a global outage during a controlled notadirectory retest.

Misleading actions

blindly decoding and re-encoding the whole URL, which can change reserved delimiters and resource identity for evidence about notadirectory.
Do not erase the first NS_E_CURLHELPER_NOTADIRECTORY occurrence by repeatedly retrying; callbacks and reconnects can replace the useful state with a later wrapper error before closing the notadirectory incident.
Do not publish credentials, protected-content material or complete private URLs in the notadirectory diagnostic record. Record redacted identifiers, lengths, hashes and protocol fields needed to reproduce the notadirectory URL check.

Technical references

Treat NS_E_CURLHELPER_NOTADIRECTORY as resolved only when the same API path crosses this checkpoint; success through a different player or cached copy is merely supporting evidence at the notadirectory checkpoint.

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