Apulfmqs.part1.rar -

If you only have part1 , you cannot extract the contents. You need all files labeled part[x] .

Splitting files allows large archives to be uploaded/downloaded more reliably than a single, massive file, which might get corrupted. apulfmqs.part1.rar

If one part is missing or partially downloaded, the extraction will fail. Re-download the specific part that is corrupted. If you only have part1 , you cannot extract the contents