Dear the Dearest, Could someone please explain to me how an exchange server database file "EDB" converted from 80GB of size to 0Bytes???!! It is a Huge Problem. I was using an exchange server on server1 and there is a backup for this server, a week ago I deployed exchange server "Server 2", move the mailboxes to this server and there is no backup for this server yet. I cannot move the mailboxes of users since the "server 2" database is offline. All I have is Backup of "Server 1" and Logs of "Server 2". Please guys I need some HELP urgently. Regards,

So you had server1 that had user mailboxes and the DB was 80GB. You created server2 and you move mailboxes to server2. Did you move all the users? What happened after this point? At what point did the DB go to 0 and when\why did server2 go offline? The DB went from 80 to 0 on which server 1 or 2? A DB does not shrink unless an offline defrag has been performed so either someone dismounted the store and deleted the DB and a new one got created, but than again a new blank DB mounted is not 0 bytes.James Chong MCITP | EA | EMA; MCSE | M+, S+ Security+, Project+, ITIL msexchangetips.blogspot.com

Dear James, thank you for sharing me my nightmare. First, no one has access to exchange server. Second, this is the scenario: I had Exchange server 2010 sp1 "ServerA" with 3 roles (Mailbox, client and Transport). I deployed "ServerB" with the 3 roles too. I moved all the user mailboxes to "ServerB". Then I removed mailbox role and client access role from "ServerA". Everything is went smoothly and all users sent and received emails as always. All this happens a couple of weeks. Yesterday, I have been notified that exchange was restarted and users cannot access their mailboxes. I checked the exchange, I found the database unmounted. Tried to mount it with no hope. I checked the .edb file and I found it 0 Bytes. Please, I need a solution. I have the backup of "ServerA" and the logfiles for "ServerB". I cannot move users from ServerB because database is not accessible. What is the best solution to restore the user connection? I created another database but how I remove users to there? Can i get emails from logsfiles??? What can I do in this case? shall I contact Microsoft? Could someone please provide me a contact of an expert in Microsoft? Thank you,

Start here: http://support.microsoft.com/common/international.aspx?RDPATH=dm;en-us;selectassist&target=assistance[string](0..33|%{[char][int](46+("686552495351636652556262185355647068516270555358646562655775 0645570").substring(($_*2),2))})-replace " "

James, Troy, Jolinor, Thank you for your replies. 2 questions: 1- I have all Users connected to "Server2" database. I create a new database on "Server2", How can I move these users to this new database (even without their emails)? When I try to move them the server reply with an error that database is not mounted. I want users to login and send and receive emails. (Priority 1) 2- If I restore the the database on "Server1" the users still are not connected to server1 database. So, after applying question 1, can we extract users emails from .edb file?? Thanks,

Dear Troy, this is great. Just a final question. After importing the user's mailboxes using Lucid8 into the new db, If I copy and paste the log files into the new location, it could update the new database (since they will have same database name)?? if not, is there is a way to benefit from the log files? Thanks a lot for your help and for the others too. Appreciated

how you tried repair mailbox option check with antivirus quarantine folder. are you tried deleted file recovery tool, it may help if someone deleted the file. for immediate action, you can create new database and create new mailbox with existing AD account. i think you can't use existing smtp address since same have in problematic database. kesav