The Consultants edition works with any version of Microsoft Exchange Server. It will bring the .edb and .stm files back into a clean shutdown state without having to run a repair utility. It writes a new signature to the .stm file and the .edb file which is useful if your .stm file does not match your .edb file. It also removes the log files so new ones can be generated to match the current database. Clean Shutdown has been proven successful through Microsofts rigorous testing and has earned the Microsoft ISV Competency Certification. Clean Shutdown saves you time and money! Some of the errors it fixes are: Stream File Mismatch Error, Time Stamp Error, Log File Disk IO Error, JET_errBadDbSignature -531, JET_errDatabaseStreamingFileMismatch -540, JET_errDatabaseDirtyShutdown -550, JET_errConsitentTimeMismatch -551, JET_errInvalidDatabaseId -1010, JET_errInvalidDatabase -1028, JET_errDatabaseSignInUse -1222, JET_errDatabaseCorruptedNoRepair -1224, JET_errFileInvalidType -1812.