NTSTATUS 0xC0000242 (STATUS_BAD_COMPRESSION

Status / error code:		Category:

Constant name:
Source:		Operating System:
Description: Compressed input data is structurally invalid for the selected decompression operation.

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STATUS_CONNECTION_ABORTED	STATUS_USER_MAPPED_FILE

STATUS_BAD_COMPRESSION_BUFFER

The compression buffer cannot be decoded safely

This status concerns the encoded buffer supplied to a compression or file-system path. Truncated chunks, invalid headers, impossible offsets, or data produced for another format can make the stream undecodable before any destination file is updated.

Do not assume that choosing a larger output buffer fixes malformed compressed data. Preserve the input bytes, the format identifier, and the expected uncompressed size so corruption can be distinguished from an API-contract error.

What to inspect

Verify the compression format and chunk boundaries used by producer and consumer.
Check input length and expected output size with overflow-safe arithmetic.
Compare the bytes against a known-good source before attempting repair or fallback decoding.

References

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