Since this is part 3 of a set, you cannot open it by itself. To extract the contents:
It significantly reduces the size of the archive, especially when compressing many similar files. Vi9v.7z.003
When you see a file ending in , it means it is the third piece of a larger split archive. The mention of a "solid feature" (Solid Compression) is a specific method used by 7-Zip to improve the compression ratio. Understanding Solid Compression Since this is part 3 of a set, you cannot open it by itself
Use 7-Zip or WinRAR to open only the .001 file. The mention of a "solid feature" (Solid Compression)
The software will automatically pull data from .002 and .003 to rebuild the original files.
Solid compression is a 7-Zip feature that treats multiple files within the archive as one continuous data stream.
Do you have of this archive, or are you seeing an error message when trying to open it?