Unzip error "End-of-central-directory signature not found"

Question

I have a ZIP file that open in Windown/MS Word, (actually it is a .DOCX file). Opening it with LibreOffice / Mac produces:

General Error.
General input/output error.

File says:

../Commission Plan.docx: Zip archive data, at least v2.0 to extract

And unzip says:

Archive:  ../Commission Plan.docx
  End-of-central-directory signature not found.  Either this file is not
  a zipfile, or it constitutes one disk of a multi-part archive.  In the
  latter case the central directory and zipfile comment will be found on
  the last disk(s) of this archive.
unzip:  cannot find zipfile directory in one of ../Commission Plan.docx or
  ../Commission Plan.docx.zip, and cannot find ../Commission Plan.docx.ZIP, period.

How do I open this file?

Solution 1

Use this alternate zip process to uncorrupt your file. (Idea based on answer at https://askubuntu.com/questions/54904/unzip-error-end-of-central-directory-signature-not-found)

mkdir DOCX
cd DOCX
jar xvf ../Commission\ Plan.docx
jar cvf ../Commission\ Plan2.docx *

This will decompress and recompress using the superior zip utility build into the java runtime on your system.

Solution 2

Unzipping with 7z worked for me:

7z x COCR2_100.zip

---

Install via APT with apt install p7zip-full.

Comments

[JdeBP]

"perfectly good" does not seem like an apt description. Rather, this has the tell-tale of a DOCX file that has been downloaded from a WWW server that generates dynamic content but doesn't serve up DOCX files correctly.

[William Entriken]

JdeBP, fair. I have no objective metric for "perfectly good", updated text.

[William Entriken]

Is this solution working for anyone else too?

[William Entriken]

Thanks for asking, yes I did get paid the commission and it was great!

[Pacerier]

How does using jar differ from using zip -FF?