If you are having trouble with this specific part, here are the most likely causes:
: If you only have part 14, you cannot access the contents. Ensure you have the full set. Halo.3.ODST.part14.rar
: This is the 14th segment of a multi-part RAR archive. In the era of file-sharing sites with size limits, large games were often split into many 100MB or 1GB "parts." If you are having trouble with this specific
: You cannot "play" or "open" part 14 on its own. To extract the game, you must have every single part (part1, part2, ..., part14, etc.) in the same folder. Common Issues & Troubleshooting Halo.3.ODST.part14.rar