Unable to extract Zip files with password

7-zipcompressionwinzipzip

I am unable to extract zip files secured with password using the Windows built-in compression utility. It prompted me for password and after I supplied one, it kept complaining "wrong password" although I'm pretty sure I entered the correct one.

The same problem occurred with 7zip too. I can only successfully extract the files using WinZip. However WinZip is proprietary and my company wouldn't want to pay for it. The zip files were created by our clients, we don't know how they created them. The zip files are just several hundred KBs.

Is there a way around this?

Best Answer

Well, you should ask them how they generated the files because encryption in zip is infamous for vendor extensions support for which varies.

That - or analyze the file to figure out which flavor of encryption it uses and then investigate its support among the programs.

WinZip can help you in this if it has some kind of "file info" command that gives relevant data.

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