: If you only have .002 but not .001 , the archive cannot be opened because the master header is usually stored in the first file.

: Ensure every numbered part of the archive is in the same directory.

: Errors typically occur if a part is corrupted or if you try to open the .002 file directly instead of starting with the .001 .

The file extension indicates the second part of a split 7-Zip archive . To access the contents, you cannot open this file by itself; you must have all numbered parts (e.g., .001, .002, .003) present in the same folder. How to Extract the File