Do you have a backup of the information store? If you can restore to a different location you can copy the database back to the original location. I would restore to a new location, Copy my existing Databases to a different location or rename the folder. Create a new folder give the needed rights to the folder c:exchvrMDbdata Copy your recovered database to the folder,you don’t need the log files. You should run eseutil on the new databases. This will insure that the data from your restore is good. Then try to mount the databases.