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| NS_E_WMP_GIF_UNEXPECTED_ENDOFFILE | NS_E_WMP_GIF_BAD_VERSION_NUMBER |
NS_E_WMP_GIF_INVALID_FORMAT
What failed
NS_E_WMP_GIF_INVALID_FORMAT (0xC00D1025) means the GIF image is structurally invalid for the Windows Media Player skin/resource loader. Unlike the version-specific result, the signature can be valid while a later block is truncated, inconsistent or malformed.
Useful parser evidence
- File size and hash, six-byte GIF signature/version, logical-screen dimensions and packed fields.
- Global/local color-table sizes and whether the file contains enough bytes for the declared tables.
- The first image/extension block where parsing stops and whether the trailer is present.
- Whether the file was generated or optimized by a tool that can reproduce the same malformed output.
Focused test
Run a structural GIF validator on the unchanged file and compare it with a known-good GIF loaded through the same WMP skin path. If the validator identifies truncation or a malformed block, regenerate the image from the source asset; do not repair it by blindly changing individual bytes.
Verification
Load the regenerated GIF in the original skin/resource location and confirm the complete file parses. Keep the malformed fixture if you maintain the loader so the invalid-format path remains covered by regression tests.
Technical references
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