: You cannot open .001 alone. You must have all subsequent parts (e.g., .002 , .003 , etc.) in the same folder.
The file is the first part of a multi-volume compressed archive created using 7-Zip. This naming convention is typically used for large files that have been split into smaller pieces for easier sharing or storage. VaVisVis.7z.001
If you are looking for a way to share or describe this file, [Release] VaVisVis Asset Pack (Multi-part Archive) : You cannot open