Is it a corrupted store/database? Then how did you move the mailboxes? Hope you are performing some store redistribution. But any how.... :-) What is the need for you to move your System Attendant mailbox? SA Mailbox is associated with the store GUID. Once you move the mailbox to another store you can not bring it back to the previous store (you have to work out a lot for doing that...). It is also not recommended by Microsoft to move any of the Exchange Core Mailboxes. If any of the database in the store is having the problem, then copy the database in different location and delete it and mount the store. It creates an empty database.Then move the mailboxes (which you have moved to different store), back to it. The SA Mailbox, SMTP Mailbox & System mailbox will be created automatically. Regards, Maha.... ________________________________ From: exchangelist-bounce@xxxxxxxxxxxxx [mailto:exchangelist-bounce@xxxxxxxxxxxxx] On Behalf Of Jeffrey Robillard Sent: Friday, March 16, 2007 7:51 PM To: exchangelist@xxxxxxxxxxxxx Subject: [ExchangeList] Re: repairing corrupted store nevermind on the administrator mailbox. I found an old post online from Mark Fugatt that you cant be logged in as the same account your running the move tasks utilities on. I logged out, logged in as a different admin level user, and moved the administrator mailbox. Worked perfect. Anybody ever move the system attendant mailbox? thats the last one I am concerned about ________________________________ From: Jeffrey Robillard Sent: Friday, March 16, 2007 9:16 AM To: exchangelist@xxxxxxxxxxxxx Subject: [ExchangeList] repairing corrupted store I am going to be repairing our corrupted mail store this weekend. I have created a new store and moved all the mailboxes to that new store so I can dismount the bad one and fix it. There are only a couple of accounts left in the bad store can am not sure how to move them. The administrator mailbox wont move. It gives an error in AD users and computers of Error: Opening destination mailbox. (which would be the new store). The information store could not be opened. The MAPI provider failed. Mapi 1.0. ID no: 8004011d-0289-00000000 Any thoughts? Is it not possible to move the administrator mailbox? There are two other mailboxes associated with our fax software, which dont have any user accounts assigned to them. I cant figure out how to move them since they dont show up in AD users and computers, they only show up in exchange system manager. I am less concerned about two to fax related system mailboxes than the error associated with moving the administrator mailbox. Thanks in advance for any info you can offer.