What is a BAK File and How to Open It? What is a BAK File? A BAK file (short for backup) is a file that contains a copy of data from another file or system. It is commonly used by programs such as ...
This post explains what is a BAK file and how to open it on a Windows 11/10 PC. BAK file is a backup file that stores a copy of another file (or data in its previous state) for backup and recovery.