MS Exchange BKF Extractor - Version v2.0 MS exchange BKF extractor - is an efficient and powerful tool that allows user to recover and restore data from corrupt BKF files. Sometimes Exchange BKF file got damaged or corrupted due to any reason. BKF corruption can cause Exchange data loss. When BKF files get corrupted it's become impossible to restore the data again. SysInfoTools Exchange BKF Recovery software is one of the best software's who can repair exchange BKF files in few seconds.