How To Fix Error With NTBackup File - Version 5.4.1 After virus attack or corruption in NTBackup files due to various unpredicted reasons, you are unable to open corrupt BKF files. And you have no idea that how to fix error with NTBackup file. Our company has developed an advanced BKF repair software that assists in repairing damaged or corrupted NTBackup file. The inaccuracy occurs due to some unpredictable reasons like:1. Missing catalog files from the Restore tab: In Windows 2000 systems, suppose we have created multiple BKF files with the help of multiple instances of Windows 2000 NTBackup utility. When we attempt to restore BKF files from Windows, we come across a problem. We find in the NTBackup that many catalog files are missing in the 'Restore' tab. Catalog files of BKF file allow the NTBackup utility to restore our crucial data from the BKF file.2. Files created on 32-bit Windows may get corrupted on 64-bit windows: When we create BKF files on 32-bit version of Windows, then it will be damaged or corrupted when we attempt to open these backup