Ss-sav-009_s.7z.001

: Hover over 7-Zip > select Extract Here or Extract to "SS-Sav-009_s\" .

: Right-click only the file ending in .001 . Extract : SS-Sav-009_s.7z.001

: You need all accompanying parts (e.g., .7z.002 , .7z.003 , etc.). You cannot extract the data using only the .001 file. : Hover over 7-Zip > select Extract Here