If you cannot download a new copy of the Zip file, obtain a replacement disk, or use a backup copy, you may still be able to recover some of your files, and even save portions of the files that are damaged in the Zip file. Here is the recommended procedure.

1. Start WinZip, switch to the Classic interface, and open the damaged Zip file.
2. Select Extract from WinZip’s Actions menu, or click the Extract button on the WinZip toolbar.
3. In the Extract dialog, check the All Files option button and select the folder into which you want to extract files. Then click OK.
4. WinZip will extract any undamaged files to the selected folder; for any damaged files, WinZip will display a CRC Error message. For each such file, before clicking OK in the error message window, use Windows Explorer to open the extract folder and look for the file; some portion of it will probably already have been extracted. Copy the partial file to another folder and then click OK in the WinZip error message window. This will erase the partially extracted file from the extract folder, leaving intact the copy of the file you made in the other folder.

Whether or not a damaged file partially recovered using this procedure will be useful depends on the nature of the file, what kind of damage there is, how much of the file was recovered successfully, and what kind of program(s) use the file. In some cases, a partial file is of no use at all; in some cases, loading a partial file into your application program and re-saving it will completely restore the data. In other (perhaps most) cases, the result will lie somewhere between these two extremes–some of the data will be recovered, and some will be lost.

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