Since this is part 3 of a set, you cannot open it by itself. To extract the contents:
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 Vi9v.7z.003
Solid compression is a 7-Zip feature that treats multiple files within the archive as one continuous data stream. Since this is part 3 of a set, you cannot open it by itself
Do you have of this archive, or are you seeing an error message when trying to open it? Understanding Solid Compression Solid compression is a 7-Zip
Use 7-Zip or WinRAR to open only the .001 file.
You must have Vi9v.7z.001 , Vi9v.7z.002 , and Vi9v.7z.003 (and any others in the sequence) in the same folder.
To extract a single file from the middle of a solid archive (or a later segment like part .003), the software must decode all preceding data in that "solid block." If one part of the archive is corrupted, it often becomes impossible to recover any subsequent files in that block. How to Use This File