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What is a good Windows tool for opening (or repairing) corrupted Zip files?

Is there a way to force 7-zip to open them?

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7-zip won't do this, as they stated in their FAQ: 7-zip.org/faq.html in question 5. It's probably a nice thing to do from a developer perspective but for users it's not really helpful. – Joey Aug 27 '09 at 9:33
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Zip Repair from Disk internals looks like a good application to do what you are after. This seems to be the only free fully-featured application that I could find to do what you are after.

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That said, depending on how corrupt the file is, you may not have that much success with getting all of the files out in their proper condition. You will probably not be able to get all your files out (if at all).

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IZArc is also able to open/repair corrupt archives and it is freeware.

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just tried Zip Repair above to open a corrupted, 800 MB zip file. Windows and 7-Zip couldn't do it. Zip Repair looked like it was working but then failed and crashed on the 2 attempts. iZArc extracted it all without a hiccup. Nice! – jacobsee Jan 18 at 18:22
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up vote 0 down vote

Best Unzip Program to open Broken and Corrupted Zip files -- Yes, 7-zip!

If 7-zip cannot get all the files, I'd try with joshhunt's Zip Repair reference.
Please do tell if you get more data extracted from a broken archive compared to that extractable by 7-zip.

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Depending on the nature and extent of the damage, WinRAR has done an excellent job in recovering files from damaged archives. I can usually recover 90%+ of the files.

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