: Use software like WinRAR (official creator), 7-Zip (free/open-source), or WinZip .
The file is the third segment of a split (multi-volume) RAR archive containing the game Call of Duty: Modern Warfare 2 . Call.of.Duty.Modern.Warfare.2.MULTi7.part03.rar
: Right-click on the first file (typically part01.rar ) and select "Extract Here" or "Extract to [Folder Name]" . The software will automatically pull data from part03 and all other segments to reconstruct the original game files. : Use software like WinRAR (official creator), 7-Zip
If you cannot connect to the servers, check if you have some antivirus or firewall blocking the connection.