Ensure every file in the sequence (at least part1.rar and your part2.rar ) is in the same directory.
Use a third-party utility like The Unarchiver or Keka , as the built-in Archive Utility does not support multipart RARs. sc23277-TS2PEv1404051.part2.rar
You do not need to extract part 2 separately. Open or right-click the first file in the series (the one ending in .part1.rar ). Extract: Ensure every file in the sequence (at least part1