How to Repair NTBackup - Version 5.4 Sometimes due to corruption or damaged in backup file it is difficult to recover the corrupt NTBackup file. In that condition use of repair BKF recovery tool which explain resolution for this query - how to repair NTBackup file. Here, you can solve the problem like" how to repair NTBackup file" with few easy steps. 1) Download and Open BKF Recovery Software, 2) Choose Quick Scan or Deep Scan option, 3) Load corrupted NTBackup file, 4) Start scanning process, 5) After complete scanning process, preview all the recovered NTBackup files, 6) At last, Extract and Save NTBackup files in your computer.