: Standard Windows "Extract All" (ZIP) usually cannot handle .7z split volumes.
Do you have the of this file, or are you missing the first one ? 001-100.7z.002
: If part .002 is even one byte smaller than it should be, the whole archive is broken. : Standard Windows "Extract All" (ZIP) usually cannot handle
: Right-click only the first file ( .001 ). Extract : Select "Extract Here" or "Extract to folder." it has no "header" or "footer
: Part .002 contains the middle chunk of the data; it has no "header" or "footer," which is why it won't open by itself.