If you try to open or extract an archive and you see the message “ Can not open file as archive “, it means that 7-Zip can’t open some header from the start or from the end of the archive.

If you’re an Android user, then you can install a file manager to get basic Zip support. Apps like Cabinet, Amaze and many others can at least view the files in an archive even if they can’t ...

While that is the easiest way to open a ZIP file, these archives sometimes hold executable files that can't run properly unless they're unzipped first. Or, if there's a file inside the ZIP archive ...