When downloading .rar files from the internet, especially game repacks or cracked versions, you should take these precautions:
If you are trying to use this file and hitting errors, check for these three things: Grounded.v1.0.1.3912.part2.rar
Only download from reputable community-vetted sites. If you found this on a random pop-up site, be very cautious. Antivirus: Run a scan on the files before extracting. When downloading