The format is a high-efficiency compression type developed by 7-Zip. When a file is too large to share easily (like a 20GB video or a massive database), creators often "split" it into smaller chunks. "N" is the original name of the file. .7z is the compression format.
Ensure you have every single part in the sequence (001 through 020) saved in the same folder . N.7z.020
Have you ever downloaded a large software package or game only to find a folder filled with weirdly numbered files like N.7z.001 , N.7z.002 , all the way up to N.7z.020 ? The format is a high-efficiency compression type developed
If the extraction fails at the very end, it usually means one of the parts (like your .020 file) was corrupted during download. Try re-downloading just that specific part to fix the error! If the extraction fails at the very end,
Do you have all of the archive downloaded in the same folder yet? 7z - Википедия