.WBK File Extension
File Type 1Word Document Backup
What is a WBK file?
WBK backup files are automatically created when the "Always create backup copy" option is enabled in Word. You may enable this option in Word 2003 by navigating to. In Word 2007, select from the Microsoft Office Button.
NOTE: If a WBK file is not found on your system, there may also be an auto-save file (.ASD) that can recover the Word document.
File Type 2WordPerfect Workbook
.WBK File Association 2
Workbook document created by Corel WordPerfect (part of WordPerfect Office).