Why can't 7-Zip open some ZIP archives?
In 99% of these cases it means that the archive contains incorrect headers. Other ZIP programs can open some archives with incorrect headers, since these programs just ignore errors.
If you have such archive, please don't call the 7-Zip developers about it. Instead try to find the program that was used to create the archive and inform the developers of that program that their software is not ZIP-compatible.
There are also some ZIP archives that were encoded with methods unsupported by 7-Zip. Some of these unsupported methods: PPMd (WinZip), WAVPack (WinZip).
If you have such archive, please don't call the 7-Zip developers about it. Instead try to find the program that was used to create the archive and inform the developers of that program that their software is not ZIP-compatible.
There are also some ZIP archives that were encoded with methods unsupported by 7-Zip. Some of these unsupported methods: PPMd (WinZip), WAVPack (WinZip).
- Can I use 7-Zip in a commercial organization?
- Can I use the EXE or DLL files from 7-Zip in a Commercial Application?
- Can I use the source code of 7-Zip in a commercial application?
- How can I add support for 7z archives to my application?
- How can I install 7-Zip in silent mode?
- What about ACE archive support?
- Why are there linking errors when I compile 7-Zip or LZMA SDK with Visual C++ 6.0?
- Why can't 7-Zip open some ZIP archives?
- Why can't 7-Zip use big dictionary in 32-bit Windows?
- Why do the add, delete and update operations not work for some existing archives?
- Why doesn't the command line version add files without extensions to an archive?