If your Windows backup (.bkf) file is not opening through NTBackup utility then it is indication that your BKF file gets corrupted due to virus attacks. In such situation, BKF recovery software can easily repair corrupted Windows backup files. You can also choose Examine after backup option instead of VSS option which is very helpful to analyze data after backup that it is in healthy mode or not. It you find some issues on backup files then you can recreate backup files. But if you have corrupted backup files and want to repair them then buy BKF recovery software to repair corrupted/damaged backup files. Tremendous quality of windows backup recovery software to Restore Windows Backup Files is 1. Extremely simple to repair corrupt backup files 2. Repair files and folders 3. Maintain the originality of BKF files or nature of data 4. Quick scanning to recover damage files quickly 5. Range Based scanning to extract a little amount of data from Bulk files 6. Deep scanning for repair a little bit of info 7. Previous facility to see repaired data through DEMO Version of software. To repair UNLIMITED damage backup files it is necessary to buy Full Version of BKF Repair Software available at $89 as Personal License or $180 as Business License only.