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NS_E_WMP_FORMAT_FAILED
How to investigate NS_E_WMP_FORMAT_FAILED
The code 0xC00D10D5 narrows the event to formatting removable storage before a Player transfer operation. Treat this result as a checkpoint in cd/dvd recording and imapi state and retain its first lower-level error.
What the Player is doing
At the checkpoint, windows Media Player builds a burn playlist, refreshes its calculated status and delegates physical recording or erase work to the optical-disc stack; The recorder, inserted medium, burn format, staging files and write engine each have a separate lifecycle. The page-specific boundary is formatting removable storage before a Player transfer operation.
A recorder that enumerates can still be busy, incompatible with the inserted medium or unable to sustain the selected write operation. A realistic trigger is that the device supports file transfer but its service provider rejects format while storage is busy.
Capture before changing state
| Evidence | Why it matters for format failed |
|---|---|
| Producing object and operation | recorder unique ID and exclusive-access owner, inserted media profile/state, burn format, playlist item, source locality, duration/byte estimate, staging directory free space, write speed, current IMAPI action and underlying HRESULT |
| Decisive observation | device/storage identity, format capability, lock owner, filesystem state and first service-provider error |
| 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: format only through a supported device operation after releasing active sync and shell handles. |
Interpretation guide
| Observation | Interpretation |
|---|---|
| The recorded values match the boundary | The result is consistent with formatting removable storage before a Player transfer operation; 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 it may be only the Player-level mapping. |
| The same call passes after one isolated change | The comparison supports the format failed 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 formatting removable storage before a Player transfer operation.
Five-step isolation test
- Capture
0xC00D10D5, it, the exact Player/API operation and the first timestamp at which it appears. - Save device/storage identity, format capability, lock owner, filesystem state and first service-provider error; do this before ejecting media, reconnecting a device, canceling a job or rebuilding the Player object.
- correlate the result with recorder unique ID and exclusive-access owner, inserted media profile/state, burn format, playlist item, source locality, duration/byte estimate, staging directory free space, write speed, current IMAPI action and underlying HRESULT.
- Reproduce once with the original source and destination, then apply only this change: format only through a supported device operation after releasing active sync and shell handles.
- Create a fresh operation generation and verify that the original call advances beyond the format failed boundary.
Different boundaries in the same family
| Related result | Different diagnostic boundary |
|---|---|
NS_E_WMP_CANNOT_BURN_NON_LOCAL_FILE | staging a burn item whose source is not a stable local file |
NS_E_WMP_ERASE_FAILED | erasing rewritable optical media through the Player burn object |
NS_E_WMP_FILE_TYPE_CANNOT_BURN_TO_AUDIO_CD | validating a source media type for conversion into an audio-CD track |
Correction criteria
The test is successful when you format only through a supported device operation after releasing active sync and shell handles, recreate the owning operation, and the original call no longer returns it.
When verifying it, do not repeatedly start a new burn against a drive that still owns or finalizes the previous session; Capture the media state and recorder owner before ejecting or replacing the disc.
Documentation
- About CD Burning.
- IWMPCdromBurn interface.
- Image Mastering API interfaces and media states.
- Checking recorder and media support.
- IDiscRecorder2::AcquireExclusiveAccess.
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