Part - 2.7z.001

The .7z tells you it was created using the 7z compression format. The .001 indicates it is of a sequence.

: This usually means you are missing one of the parts or one of them is corrupted. Double-check that every file in the sequence is present. part 2.7z.001

You will almost certainly need the subsequent parts— .7z.002 , .7z.003 , and so on—to actually see what’s inside. How to Open It (The "Golden Rule") part 2.7z.001

Demystifying the ".7z.001" File: What Is It and How Do You Open It? part 2.7z.001