I am in the process of migrating from SBS 2003 to SBS 2008 and am having issues migrating the mailboxes. So far, using Exchange 2007, I have migrated a few successfully. Most of these have little or no mail in them.
When trying to migrate the others, I get an error:
"Unable to unlock mailbox ID no: 00000000-0000-00000000, error code: -1056749254"
I have seen the question on EE about this and so then tried to ExMerge on the 2003 box. When I try this, I get the error:
"Error opening message store (MSEMS). Verify that the Microsoft Exchange Information Store service is running and that you have the correct permissions to log on. (0x8004011d)"
I've searched this too and, as far as I can tell, my permissions are set correctly. I've also ensured the services are running on both servers.