D_day3.part2.rar -

Do you have of this archive (like part1) saved in that same folder?

Ensure you have D_Day3.part1.rar , D_Day3.part2.rar , etc., in one directory. D_Day3.part2.rar

If you get a "Next volume is required" error, you are missing one of the parts (likely part 1 or part 3). Do you have of this archive (like part1)