In case you have a ZIP archive file that gives you the "The compressed (zipped) folder 'yourfile.zip' is invalid" error, why not try Zip2Fix. It is small, portable, simple to use and fast processing with a high sucess rate.
Just execute ZFX.exe, click on open and select the damaged ZIP archive, Zip2Fix will process it quickly and will create a new ZIP archive that contains the good files.
Features
- Small size executable
- Portable
- Simple to use
- No changes to the original ZIP file