Final error: 0xe000848c - Unable to attach to a resource.

Hi All,

my problem is solved! I have combined 2 tips and tricks from this forum.

The first step was the post form https://www-secure.symantec.com/connect/articles/restoring-exchange-or-individual-mailboxesitems-using-backup-exec-howto.

The second step was the tip from Dev T:

Create a new account in AD named : symantec with following settings:
1  : Member of the Domain Admin group and Local Admin Group if Exchange is a member server
2  : Create a Mailbox for Symantec, send a test email and oprn it in OWA to activate the Mailbox.
3  : Make sure that the Mailbox is not hidden from the Global Address List.
4  : Add the account "symantec" as Exchange Server Administrator in Exchange Management Console.

Open Backup Exec, go to TOOLS--Logon Accounts and Change the Logon Account to "symantec", make sure that "system Logon Account" and "Default Logon Account" is symantec.

Now restore any individual item from exchange backups. 

I have implemeted a default backup account. This account had no mailbox. When I created a mailbox for this user the restore worked.

Thanks to you all!