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Exchange2010 backup is failing

Created: 11 Oct 2012 | 4 comments


We have the following setup

1. Exchange2010 is in DAG and it has 2 nodes.

2. On the 1st node I have BE2012sp1a installed and remote agent on 2nd node 

3. the backup goes to dedup folder and it has setting of "The Microsoft Exchange backup was made from the active copy of the database on server"

4. the job is failing with this error

0xe0000393 - Cannot extract mailbox messages from the Exchange backup. Review the job log for more information
Backup- \\\Microsoft Information Store\MAR5DB01
V-79-57344-915 - Unable to complete the operation.  The following error was returned when opening the Exchange Database file:  '-1022 There is a disk IO error. '

5. Please assist as I am not able to find any article related to this error.

Comments 4 CommentsJump to latest comment

nilesh.dhakras's picture

This error is MAPI logon failure error. Are you able to logon to any mailbox using outlook?

CraigV's picture

Hi Wiki,

Check the TN below for information on your error and see if they help at all:


Alternative ways to access Backup Exec Technical Support:

WikiDonor's picture

Hello CraigV,

The article is actually for an incremental backup job. But our full backup is failing and If we do a non grt backup it is working fine. Any idea on this what could be causing 

If you find my comment informative and helpful please mark the post as resolved.

Jaydeep S's picture

Ensure all the requirements mentioned below are met :
1. Backup Exec Account used for backup must have an active mailbox on the exchange server.
2. The mailbox should not be hidden from the Global Address List
3. Make sure the ID used by Backup Exec is added to the Organization Management group of Exchange Roll Based Access Controls (RBAC).
4. Backup Exec "Logon Account" is an explicit member of Local Administrators group in the Exchange Server
5. Backup Exec "Logon Account" is "Unique" inside the Exchange Organization.  See  "How to confirm that an Exchange mailbox name is unique within the Exchange

organization when configuring Backup Exec to back up Exchange mailboxes"
8. Make sure the Exchange 2010 Management tools are installed on the Backup Exec server.

Is the Backup Exec Account used for the job the same as the Backup Exec Service Logon Account