There is a free method to repair the Exchange database, but it has no guaranteed success. I recommended you use an automated method to repair the Exchange database. SysInspire EDB to PST Converter software can repair your edb file that has been corrupted. It repairs the file and converts them into PST format as well as it is able to convert edb into EML, EMLX, MSG, and HTML format also. You can convert public or private mailboxes with the help of this software.