Good day, have this issue when I tied to backup mailboxes on Exchange2010, if backup the database work fine, but when I tried to backup mailboxes an error appears: Critical] From: OB2BAR_Main@host.domain.com "Single Mailbox" Time: 2008-1-8 9:27:03 Failed to open message store My Exchange topology is: 4 Server's 2 CAS with NLB and 2 Mailbox The dataprotector user is in the Backup Operatos, Exchange Admins and View-Only Organization Management In Exchange i do this: 1- Install the MAPI from http://www.microsoft.com/download/en/details.aspx?id=1004 2- Install the HP Dataprotector intrgration Agent for Exchange 2010 3- Creeate a AD user "dataprotector" an add to the groups: Backup Operatos, Exchange Admins and View-Only Organization Management 4- Add the user "dataprotector" to ADMIN group of Dataprotector 5- Add the user "dataprotector" to local user administrator in Exchange server 6- Using Powershell on Exchange server run Add-RoleGroupMember "View-Only Organization Management" -Member "dataprotector" Get-MailboxDatabase | Add-ADPermission -User "dataprotector" -AccessRights ExtendedRights -ExtendedRights Receive-As, ms-Exch-Store-Admin 7- Configure the "Data Protector Inet" service on Exchange server using the "dataprotector" user account. 8- on local security policy of the exchange 2010 server's add the account "dataprotector" to Act as a part of operating system log as a service impersonate a client after authentication 9- Disable the IPv6 option on Exchange 2010 10- create a MAPI profile using CMD "mbx_bar" command named "$$$Data Protector" and set as default Any ideas?

Are you backing up entire database or just a mailbox?Gulab Prasad, MCITP: Exchange Server 2010 | MCITP: Exchange Server 2007 MCITP: Lync Server 2010 | MCITP: Windows Server 2008 My Blog | Z-Hire Employee Provisioning App

Both, backing up the entire database works ok, backing up only mailboxes don't

Hi Matias, Seems like this is an HP Data Protector issue, suggest you seek the solution in the HP Communities. http://h30499.www3.hp.com/t5/Data-Protector-Support-and-News/bd-p/itrc-251 Just for reference only: Exchange 2010 Single Mailbox Backups http://h30499.www3.hp.com/t5/Data-Protector-Support-and-News/Exchange-2010-Single-Mailbox-Backups/td-p/5574625 Please remember to mark the replies as answers if they help and unmark them if they provide no help. If you have feedback for TechNet Subscriber Support, contact tnmff@microsoft.com.Frank Wang TechNet Community Support

Hi Matias, Any updates?Frank Wang TechNet Community Support

i have the same exchange 2010 SP2 deployment and i have received the following error: "the database reported error while performing requested operation" any ideas to solve this problem pleeeeeeeeeeeeease?