# BadZipFile: how to find the corrupted file?

**URL:** https://forum.qiime2.org/t/badzipfile-how-to-find-the-corrupted-file/32492
**Category:** User Support
**Tags:** demux, import
**Created:** [February 10, 2025, 11:13am UTC](https://forum.qiime2.org/t/badzipfile-how-to-find-the-corrupted-file/32492 "2025-02-10T11:13:35Z")
**Posts on this page:** 1
**Showing post:** 3

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### Author: ![Rob\_DNA](https://forum.qiime2.org/user_avatar/forum.qiime2.org/rob_dna/32/18558_2.png) [@Rob\_DNA](https://forum.qiime2.org/u/Rob_DNA)
#### Post date: [February 11, 2025, 12:05pm UTC](https://forum.qiime2.org/t/badzipfile-how-to-find-the-corrupted-file/32492/3 "2025-02-11T12:05:23Z")

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Hi Evan,

thanks for the quick reply. I'm currently redownloading the data using wget instead of just clicking a download link. Perhaps something went wrong with the browser download of the data and is it an easy fix. I'll let you know how that turns out. If I still get the errors, I'll post the information you request.

Regarding the file names, I know it sounds strange, but it is really the case. Somebody else reports a similar thing:

> [@Denoise: Not a Qiime2 artifact](https://forum.qiime2.org/t/denoise-not-a-qiime2-artifact/24692/7):
>
> I noticed that for the previous error, the file name that is referenced (T2163\_12S\_CGCAGTCTAT\_L002\_R1\_001.fastq.gz) is not even the file name that I see, but it is a file name that appears in my sequencing report as the demultiplexed file name (sampleID\_index\_lane#\_read#\_001.fastq). I guess the demultiplexing process somehow deciphers that from the header? I removed that T2163 file and this time got the follow error with qiime tools validate:

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