How to repair corrupted and damaged zip files

Quite a few times, while trying to open a zip file, you may see a message stating that the zip file is corrupt, incomplete or damaged and that the extraction cannot proceed. The exact message could be – The compressed (zipped) folder is invalid. This can also happen if the download is incomplete or has got corrupted along the way.

This happens because Zip files have a well-defined structure and are therefore prone to corruption. Even in the case of minor corruption, the extraction tools will not be able to extract its content, since all zip tools first run a check for integrity and if they find that the CRC values of the original files of an archive do not match the extracted ones, they will not work.

Repair zip files

If you receive The compressed (zipped) folder is invalid message, then I’d like to recommend these good free zip file repair software that will help you to repair and extract the contents of the zip files:

  1. Repair Zip
  2. Zip2Fix
  3. IZArc
  4. Object FIX ZIP
  5. Haozip.

Let us take a look at them in brief.

1] Repair Zip

The first is Repair Zip. This tool helps repair the zip structure and extract the contents of the archive. It’s plus point is that it has a wizard-like interface, making zip repair and recovery very easy. You can get it here.

Repair zip files

2] Zip2Fix

The other is  Zip2Fix. This tool extracts the undamaged files from a damaged ZIP archive. The good files are extracted into a new ZIP file. It also worked with SFX Zip files.

Zip2Fix creates a new zip file with the same file name suffixed with containing all the undamaged files. After the recovery is complete, you can check the log window for more details on what has been recovered and what, not. Download this free software here.

3] IZArc

IZArc broken archive repair utility

IZArc is another broken archive repair utility that can help you. IZArc is one of the finest freeware archive utility supporting many archive formats. It can also help you repair compressed files.

4] Object FIX ZIP

Object FIX ZIP is a program for repairing Zip archive files. It can reconstruct a specified Zip file by creating a new Zip archive while recovering the contents of the faulty Zip file where possible. It is available here.

5] Haozip

The compressed zipped folder is invalid

Haozip is  another free compressed file repair tool than can help. You can download it here.

If you know of any other good free zip recovery tools, please do share here.

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Anand Khanse is the Admin of, a 10-year Microsoft MVP Awardee in Windows (2006-16) & a Windows Insider MVP. Please read the entire post & the comments first, create a System Restore Point before making any changes to your system & be careful about any 3rd-party offers while installing freeware.