I've been trying to restore the private information store for some time now. Our environment is Exchange 5.5, SP3 and we've got Backup Exec V 7.3 with the Exchange Add-on. I've done a restore of the Information Stores (public and private) to a test server and this worked well. After checking DB versions the restore went well. At this point I can start the System Attendent and the Directory Service but whenever I attempt to start the Information store I get an error 4105. Nothing much more in the event logs excluding the information that the service died with service specific error 4105. Has anyone seen this? Is there something I'm missing?