Pa02.7z.001 Here

: All parts must have the exact same base name. If one is named PA02 (1).7z.001 and the next is PA02.7z.002 , the extractor won't connect them.

A file with the .001 extension, such as , is a split archive file typically created by 7-Zip or other compression tools like WinZip . This specific naming convention indicates it is the first part of a larger, multi-volume 7z archive. PA02.7z.001

Below is a blog post draft designed to help users understand and handle this type of file. Dealing with Split Archives: What is PA02.7z.001? : All parts must have the exact same base name

: Ensure every numbered part of the archive is in the same directory. If a part is missing, the extraction will fail. the extraction will fail.