NTBackup utility is a free in-built backup utility and used to create a backup copy of crucial database. The file extension of backup files is .bkf (backup file). Although we create backup files to prevent data loss situation yet we face many problems which you cannot be avoid. Some of the reasons for BKF files corruption are: Virus or Trojan attack, unexpected system failure, CRC (errors), etc. But if you are still facing corruption problem and unable to find appropriate solution to restore Windows backup files then we introduce you an effective tool that can easily resolve BKF issues without taking so much time and that is BKF Repair tool (BKF Recovery Software Shareware).