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NS_E_CD_NO_READER
Failure boundary and ownership
NS_E_CD_NO_READER with value 0xC00D11FA records creating the Player’s CD reader/filter for the selected drive. The producing call and its state are more diagnostic than a later aggregate Player failure.
Underlying mechanism
At the checkpoint, windows Media Player identifies the inserted medium, reads its table of contents, creates a CD reader, and then chooses digital audio extraction or an analog playback path; Ripping adds destination-path creation and an encoder selected from the user’s rip settings. The page-specific boundary is creating the Player’s CD reader/filter for the selected drive.
Recognition of the drive does not prove that usable audio sectors, a stable digital-read path or a valid rip destination are available. The condition can be reproduced when the drive enumerates but the CD reader filter cannot be created.
Trace fields worth keeping
| Evidence | Why it matters for no reader |
|---|---|
| Producing object and operation | physical drive identifier, media-change generation, disc and track number, table-of-contents result, digital/analog mode, error-correction flag, read speed, rip state, output format and first lower-level drive error |
| Decisive observation | drive object, filter/COM activation result, media state and installed component version |
| Generation identity | Record the same disc, device, job or Player operation generation that returned this result; a reconnect or media change creates a different test. |
| Underlying result | Keep the first device, filesystem, COM, codec, DirectShow, IMAPI or BITS result seen before the Player mapped it to this result. |
| Controlled comparison | Repeat the producing call after changing only this condition: restore the reader component or select a drive that can instantiate it. |
What the comparison proves
| Observation | Interpretation |
|---|---|
| The recorded values match the boundary | The result is consistent with creating the Player’s CD reader/filter for the selected drive; correct that state before changing unrelated codecs, drivers or playlists. |
| A lower layer failed before this result | Preserve that earlier HRESULT or device result because this result may be only the Player-level mapping. |
| The same call passes after one isolated change | The comparison supports the no reader diagnosis rather than a broad installation failure. |
| The code changes after retesting it | The boundary was passed; diagnose the new HRESULT as the next independent stage. |
It scopes the failure to creating the Player’s CD reader/filter for the selected drive.
Decision path
- Capture
0xC00D11FA, it, the exact Player/API operation and the first timestamp at which it appears. - Save drive object, filter/COM activation result, media state and installed component version; do this before ejecting media, reconnecting a device, canceling a job or rebuilding the Player object.
- correlate the result with physical drive identifier, media-change generation, disc and track number, table-of-contents result, digital/analog mode, error-correction flag, read speed, rip state, output format and first lower-level drive error.
- Reproduce once with the original source and destination, then apply only this change: restore the reader component or select a drive that can instantiate it.
- Create a fresh operation generation and verify that the original call advances beyond the no reader boundary.
Close alternatives
| Related result | Different diagnostic boundary |
|---|---|
NS_E_CD_EMPTY_TRACK_QUEUE | starting playback or extraction without a queued CD track |
NS_E_CD_ISRC_INVALID | validating the International Standard Recording Code associated with a track |
NS_E_CD_MEDIA_CATALOG_NUMBER_INVALID | validating the disc-level Media Catalog Number |
Safe correction
Correct this boundary by making sure you restore the reader component or select a drive that can instantiate it. Then reacquire the interface or media state that produced it and repeat that call.
When verifying it, do not polish the disc, change the driver, switch read modes and change the rip format in one test; preserve the first failing track and alter one boundary at a time.
Source material
- About CD Ripping.
- Windows Media Player object model.
- IDiscRecorder2::DisableMcn and media-change notification.
- WAVEFORMATEX structure.
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