Select it and tap the icon (usually an upward arrow). On Mac: Use the The Unarchiver or similar utility.
: Ensure the files are named identically except for the number at the end (e.g., Archive.7z.001 , Archive.7z.002 ).
The file extension indicates that you have the first part of a split archive . Large files are often broken into smaller numbered pieces (0.001, 002, etc.) to make them easier to download or share. Step 1: Gather All Parts
Before you can open the file, you have all the associated parts (e.g., .7z.002 , .7z.003 ) in the same folder . If any part is missing, the extraction will fail with an "Unexpected end of data" error. Step 2: Extract the Files
Open the .001 file, and it will handle the joining process automatically.