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There are several options that are available to you in order to try and fix your zip file. You can try using a linux distro with an archive manager to load the zip (may or may not work) or you can utilize a number of programs to recover the zip (or attempt to atleast) DiskInternals ZIP Repair has been rated as one of the top repair programs that you can use to recover a broken zip file. There are a few other programs that you can use but those are paid programs. I would recommend trying DiskInternals first. Please let me know how it goes!