If the file name was part of a larger set (e.g., eys145.part1.rar ), ensure you have all parts in the same folder before trying to extract.
If you found this file on your computer and don't remember downloading it: eys145.rar
To "look into" the file, you need specialized software to decompress the proprietary RAR format. If the file name was part of a larger set (e
Before opening any unknown .rar file, prioritize security to avoid potential malware: prioritize security to avoid potential malware: