File Content Extraction 26.3
Filter SDK C++ Programming Guide

# unexpected_zip_detection

Specifies whether `Document::subfiles()` throws an exception if a zip file has been concatenated onto the end of the input file, in an attempt to hide it. For more information, see Unexpected ZIP Detection.

Default value: `false`

## Syntax

    Configuration& Configuration::unexpected_zip_detection(bool unexpected_zip_detection)

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Version 26.3 | Last updated July 2026

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Product: File Content Extraction 26.3

Topic Title: unexpected_zip_detection