Hi All, I've 2 servers in same site. same subnet but I can't move mailbox for one server to another. When I'm trying I get this error: Summary: 1 item(s). 0 succeeded, 1 failed. Elapsed time: 00:00:26 Test N-APPS Failed Error: Failed to communicate with the mailbox database. MapiExceptionNetworkError: Unable to make connection to the server. (hr=0x80004005, ec=2423) Diagnostic context: ...... Lid: 16280 dwParam: 0x6BA Msg: EEInfo: ComputerName: n/a Lid: 8600 dwParam: 0x6BA Msg: EEInfo: ProcessID: 11128 Lid: 12696 dwParam: 0x6BA Msg: EEInfo: Generation Time: 2013-02-23 05:36:43:473 Lid: 10648 dwParam: 0x6BA Msg: EEInfo: Generating component: 18 Lid: 14744 dwParam: 0x6BA Msg: EEInfo: Status: 10060 Lid: 9624 dwParam: 0x6BA Msg: EEInfo: Detection location: 318 Lid: 13720 dwParam: 0x6BA Msg: EEInfo: Flags: 0 Lid: 11672 dwParam: 0x6BA Msg: EEInfo: NumberOfParameters: 0 Lid: 53361 StoreEc: 0x977 Lid: 51859 Lid: 33649 StoreEc: 0x977 Lid: 43315 Lid: 58225 StoreEc: 0x977 Lid: 50835 Lid: 62321 StoreEc: 0x977 Lid: 47987 Lid: 50033 StoreEc: 0x977 Lid: 52465 StoreEc: 0x977 Lid: 60065 Lid: 33777 StoreEc: 0x977 Lid: 59805 Lid: 52209 StoreEc: 0x977 Lid: 19778 Lid: 27970 StoreEc: 0x977 Lid: 17730 Lid: 25922 StoreEc: 0x977 Click here for help... http://technet.microsoft.com/en-US/library/ms.exch.err.default(EXCHG.141).aspx?v=14.1.218.11&t=exchgf1&e=ms.exch.err.ExD5D911 Exchange Management Shell command attempted: 'domain.com/Paris/Test N-APPS' | New-MoveRequest -TargetDatabase 'Mailbox Database Exc1' Elapsed Time: 00:00:26 Francis B.

Hello, Please check whether the heritance is blocked on Mailbox Store. BTW, can you create new mailbox on the target mailbox store? Thanks,Simon Wu TechNet Community Support