NS_E_WMP_GIF_BAD_VERSION_NUMBER: meaning and diagnosis

Status / error code:

Category:

Constant name:

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Operating System:

Description:

Invalid GIF version. Only 87a or 89a supported.%0

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NS_E_WMP_GIF_INVALID_FORMAT	NS_E_WMP_GIF_NO_IMAGE_IN_FILE

NS_E_WMP_GIF_BAD_VERSION_NUMBER

What the decoder rejected

NS_E_WMP_GIF_BAD_VERSION_NUMBER (0xC00D1026) means the GIF signature names an unsupported version. Windows Media Player accepts the standard GIF87a and GIF89a version strings for the skin/image path represented by this result.

Check the file header first

Preserve the first six bytes of the file and the original file hash.
Verify the signature starts with GIF and that the version field is exactly 87a or 89a.
Confirm the file was not transcoded, text-mode copied, prepended with another header or mislabeled with a .gif extension.

Focused test

Compare the failing header with a minimal known-good GIF87a or GIF89a image loaded through the same WMP skin/resource path. If the known-good file loads, repair or regenerate the source GIF rather than changing Player plug-ins or codecs.

Distinguish version from structure

NS_E_WMP_GIF_INVALID_FORMAT covers a malformed GIF whose overall structure cannot be accepted. A bad version result is narrower: start by inspecting the signature/version bytes before investigating image descriptors, color tables or extension blocks.

Verification

Regenerate the image with a compliant GIF version and load the original skin/resource again. Confirm both the header and the complete GIF parse succeed.

Technical references

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