Consider a scenario NTBackup utility stored BKF files on network get corrupt.
CRC error is root cause of BKF files get corrupt. The CRC error is an error-checking method in data transmission where a CRC character is produced at the transmission end. The value of this character depends on the hexadecimal value of all 1s in the data block. This check is used to validate the integrity of data blocks. The error occurs if some bytes in the file is lost or overwritten.
To resolve this problem, you should try to create the BKF file, if the data is not lost. However, if you have lost your data then use third-party software to repair BKF files. These are Read-only tools that are able to recover data from BKF files using fast scanning algorithms which are very sophisticated and without modifying the original content.