Ubuntu: Why is this zip file unable to open?


I'm trying to unzip a zip file which contains a video... right away it says:

7-Zip [64] 9.20 Copyright (c) 1999-2010 Igor Pavlov 2010-11-18 p7zip Version 9.20 (locale=en_US.UTF-8,Utf16=on,HugeFiles=on,2 CPUs)

Error: /home/cyberproxy/Downloads/Floating1a.zip: Can not open file as archive

Errors: 1

Unzips on my Android, unzips on my Windows desktop, unzips on my mother's iOS device with unzipper app.

What can I do to fix this?


Try downloading p7zip-full from the standard repository.

"p7zip-full provides utilities to pack and unpack 7z archives within a shell or using a GUI (such as Ark, File Roller or Nautilus)."

EDIT: It seems that newer versions of File Roller can open 7Z files automatically, according to the installation notes.


My first thought is that the archive is not properly formatted as such. The unzip program doesn't think that it's a valid zip file.

Try opening a terminal (search for it in your programs menu). For the purposes of this demonstration, I'm going to assume it's in your downloads folder.

Once you've opened the terminal do the following:

  1. Change directory to the downloads folder.

    cd ~/Downloads

  2. Unzip the file using the command-line tool, unzip

    unzip Floating1a.zip

This should put it into a folder (or give you a zip-bomb in the current directory) of everything that's in it. If this fails, it is almost guaranteed to be a problem with the file, not the unzip program.

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