Forza.motorsport.7.part06.rar Instant

This is the most common issue. It means the data in part06.rar is corrupted.

Delete part06.rar specifically and re-download just that segment. You don't need to re-download the whole game. Forza.Motorsport.7.part06.rar

If the extraction stops at part 06 and asks for the "next volume," it means part07.rar is either missing from the folder or has a slightly different filename. This is the most common issue

Are you getting a (like "CRC failed")? Do you have all the other parts downloaded? Are you trying to repack the file or just install the game? Forza.Motorsport.7.part06.rar