Every file that we have saved on our computers has a particular extension. The file extension is added at the end of the filename followed by a dot (.). It tells the operating systems about the ...

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.

If you've overwritten a Word file and haven't saved any older copies of the file under different file names, you can check to see whether Windows 7 has a previous version of the file to restore to.