: Ensure FandP.7z.001 through FandP.7z.004 (and any subsequent numbers) are located in the same directory.
If you are missing any parts (e.g., if you only have part 4), the archive is incomplete and cannot be used. You will need to download the missing segments from the original source. Do you have the other numbered parts of this file, or FandP.7z.004
The file is the fourth part of a split compressed archive created using 7-Zip . : Ensure FandP
: Right-click on FandP.7z.001 (the first file in the sequence). if you only have part 4)