Microsoft Backup Recovery Software - Version 5.4.1 While you are facing BKF corruption issues and want to recover entire damage BKF files then make use of Microsoft backup recovery software for resolving BKF files error message. You can get a demo version of Microsoft backup recovery software free of cost to check out performance of the product. Demo version allows you to open, read, and view the entire corrupt backup database. It also allows you to use all features in demo version without any cost. If you want to recover few databases from huge size backup file then you can choose a partial scan option. To recover and to save all corrupted Microsoft backup databases you have to purchase Personal License only at $89.