Ss-nin-030_s.7z.001 →

To view or extract the contents, you need all parts of the archive (e.g., 001, 002, ...) in the same folder.

7zip file with numbers on it like 001 means that you only have a part file of the whole compressed file. Microsoft Learn How to Open and Extract .001 Files - Microsoft Q&A SS-Nin-030_s.7z.001

Do not attempt to open only the first part, as it will likely appear empty or corrupted. To view or extract the contents, you need

Based on the file naming convention, is the first part of a split 7-Zip compressed archive . Based on the file naming convention, is the

To help you further, do you have the other parts of this archive (like .002 , .003 ) in the same folder? How to Extract .7z.001 files - Microsoft Q&A

You must use 7-Zip or WinRAR to open the first file (.001) and extract the entire content.