: It is a "spanned" or "split" archive. The .001 extension indicates this is the first piece of a larger file that was divided into smaller segments to make it easier to transfer or store.
: You need all subsequent volumes (e.g., QXJmc2FY.7z.002 , QXJmc2FY.7z.003 ) in the same folder . If any part is missing, the archive cannot be reconstructed. QXJmc2FY.7z.001
Do you have the of this archive (like .002 or .003) in the same folder? : It is a "spanned" or "split" archive
: These files are natively generated by 7-Zip , an open-source tool created by Igor Pavlov. If any part is missing, the archive cannot be reconstructed
: While 7-Zip is the native application, other tools like PeaZip or WinZip can also handle split 7z archives.
To open the contents, you must meet the following conditions: