You cannot open this file by itself. It is a "slice" of a larger archive. To extract the data, you must:
: Always right-click on the file ending in .001 to start the extraction process. Desktop.7z.002
: Use 7-Zip (Windows) or Keka/The Unarchiver (macOS) to handle these formats. What This File Likely Contains You cannot open this file by itself
The total size was too large for a single transfer (e.g., email limits or FAT32 file systems). A user was migrating files between computers. Review & Verification If you are auditing this file for security or integrity: Desktop.7z.002
: Like any .7z file, these can be password protected. You will prompted for the password only after the software begins reassembling the pieces.