Because it is a "split" archive, you cannot open this file on its own. To extract the content, you need to have (part1, part2, part3, etc.) in the same folder. How to handle this file:

The file is the third piece of a multi-part compressed archive.

: Ensure you have all associated files (e.g., part1.rar , part2.rar ) saved in the same location on your computer.