NTBackup Restore Solution - Version 5.4 If you are endeavoring to restore windows backup file but shows error message like “the backup file contains unrecognized data” then apply the NTbackup recovery tool to overcome such situation. NTbackup recovery tool is developed by company to keeping in mind of user disaster query. Through this software you can easy to handle all corruption issues. For that you will have to download NTBackup recovery tool of demo version in your machine hard disk. After downloading software Exec file then run application procedures for recover damaged BKF files. Moreover, you can get effectively NTbackup restore solution through which this application you can safely repair corrupt BKF files and recover damage BKF files from any dangerous conditions.