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Everything worked fine, then I updated 7-zip and files with password cann't be open. Windows 7.

Files without password open as usual. Everything works if I use 7zFM, browse to file and open it here. It works if I right-click "extract here". But if I just double click to browse it, it prompts password and after entering it it just disappears.

So, everything works except opening files with password from windows explorer to view their content in 7zFM.

What can be the reason?

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2 Answers 2

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Get 7-Zip from a known site, such as 7-Zip.org, and reinstall the software.

Use an appropriate version, i.e., 32-bit or 64 bit.

N.B. The latest fully-tested release version is 19.00; v. 21.02 is labeled alpha, a test version. So if v. 21.02 is problematic on your PC. use v. 19.00.

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  • Reinstalling doesn't help, it is seems to be some minor ui option or error. Maybe something with my system if nobody else had this.
    – Qiao
    Commented Jul 19, 2021 at 14:56
  • Do you have multiple keyboard languages installed? After switching languages, I found it impossible to log into Windows. Check that simple things like cap locks and language are not causing the issue.
    – DrMoishe Pippik
    Commented Jul 19, 2021 at 17:43
  • Somehow it starts working, it can be that reinstalling helped but only after restarting pc. Though I tried reinstalling before, so may be a new version.
    – Qiao
    Commented Jul 22, 2021 at 15:52
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2024 - It's been my long-standing experience AND understanding that 7-ZIP password-protected archives are of a "different" format such that Windows' built-in intrinsic "Compress ZIP Folder" tool is not intelligent enough to prompt for the password to unzip / decompress / unzip.

It's a SHAME, since 7-ZIP requires BOTH the sender and the recipient to have the tool installed.

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