Ever experienced getting an error like “Cannot open file: it does not appear to be a valid archive” when trying to open a Zip-compressed file? If you regularly download compressed files off the Internet, then you must have seen this error many times.
This error comes when the compressed file is damaged or corrupted. I have tried repairing such archives with the built in WinZip repair tool, but that has never helped me. DiskInternals ZIP Repair helps repair zip structure and extract the contents of a damage or corrupted archive.