If NTbackup utility has failed to restore windows backup file then get help of BKF file recovery software which recover corrupt BKF file and provide whole NTbackup restoration solution. Apart from that, you can defeat such error message
BKF File
Adolix
InnerSystem Software Ltd
SOFTOTEC
Repair PST
SysTools BKF Repair Tool
StellarFlare
Memory Card Data Recovery
Christopher Fillion
Technopoles-M
DigitalView Video Studio
Repairing MS Outlook PST files
DigitByte Studio
DB-Pros, Inc.
HiLo Enterprises
Klaus Theede
Pass-Guaranteed Inc.
WISCO Computing
Trellian