Only download RAR files from trusted sources, as they can sometimes contain harmful content, similar to any other file type. To provide more specific help, I need to know: Are you getting a specific error message ?
This usually means one of the parts (often the last one) is not fully downloaded. Ensure all files are 100% complete.
Use software like WinRAR (Windows/Android) or 7-Zip (Windows/Linux) to handle these archives.
The extraction will fail if the parts are named differently or are not in the same directory.
You must download all parts in the set (e.g., part1 , part2 , part3 , etc.) and place them in the same folder.
Do you have (e.g., part2, part3) downloaded in the same folder? What operating system are you using (Windows, Mac, etc.)? What is a RAR File - Cloudmersive APIs
If the archive is corrupt, you can use WinRAR's built-in Repair Command to fix it.