As we all connect with computers to store significant information and to improve our working style. But the problem arises in conditions when some types of corruption occur in our computer files and for this we have no second way except some recovery software. As we already know the inbuilt ‘backup and restore’ function but sometimes it does not work for you because this free NTBackup.exe utility does not support corrupted database. I want to mention one error message which is occurred by system many times and that is ‘backup file contains unrecognized data and cannot be used’. This is the most generated error message which occurs when corruption hits backup files. By all means, you will have to get some third party BKF recovery tool that helps you to overcome this curse situation. You can download free version to view the recoverable items. For completing the process of recovery, you have to pay $89 for personal license.