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NS_E_WMP_PNG_INVALIDFORMAT
Diagnosing NS_E_WMP_PNG_INVALIDFORMAT
0xC00D1028 maps to this result. Its actionable interpretation is the PNG resource fails a format or decoder capability check before it can become skin artwork within the skin artwork decoder and raster-file contract; the producing mechanism is the image-loading path used by Windows Media Player skins to identify GIF, PNG, BMP or JPEG data, validate format-specific headers and create a bitmap usable by a UI control.
Evidence that separates the result
| Field | What to record |
|---|---|
| Decisive check | Capture the PNG signature, IHDR fields and the first failing chunk/CRC and compare the same bytes in a strict standalone decoder |
| Artifact identity | First invalid marker/chunk and its byte offset for this reproduction |
| Runtime state | Decoder-supported coding mode versus the file’s declared mode for this reproduction |
| Owning object | Standalone decode result outside the skin package using the same bytes for this reproduction |
| Lower-level result | Archive member name, byte length, hash and file signature for this reproduction |
| Correlation | Format header fields, dimensions, bit depth and color model for this reproduction |
Representative case for PNG invalid format: The skin definition is valid, but one PNG member prevents the view from loading.
Focused test and correction
- Confirm the failure directly: capture the PNG signature, IHDR fields and the first failing chunk/CRC and compare the same bytes in a strict standalone decoder.
- After you replace or re-encode the specific resource with a supported representation, recreate the owning WMP object and verify that the corrected generation completes.
Nearby results with different boundaries
| Result | Different condition |
|---|---|
NS_E_WMP_GIF_NO_IMAGE_IN_FILE | The GIF container has recognizable framing but no decodable image frame |
NS_E_WMP_PNG_UNSUPPORTED_BITDEPTH | The PNG declares a bit depth unsupported by the legacy WMP skin decoder |
NS_E_WMP_GIF_BAD_VERSION_NUMBER | The GIF version or decoder/library version field is outside the implementation’s accepted set |
Verification
Repeat the original operation with a fresh owning object after the identified precondition is corrected. Treat this result as resolved only when that same operation passes this stage; preserve any later HRESULT as a separate failure.
Technical references
- Skin files and image resources — API or format context.
- PNG specification — documentation for this result.
- Windows Media Player skins — normative or platform material relevant to this result.
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