So trying to move a bounch of mailboxes from one database to another, on a Exchange 2010 server. All but two is moved. The two fails with following error: Error: MapiExceptionNotFound: Unable to get properties on object. (hr=0x80004005, ec=-1601) Diagnostic context: Lid: 55847 EMSMDBPOOL.EcPoolSessionDoRpc called [length=86] Lid: 43559 EMSMDBPOOL.EcPoolSessionDoRpc returned [ec=0x0][length=382][latency=0] Lid: 23226 --- ROP Parse Start --- Lid: 27962 ROP: ropOpenMessage [3] Lid: 17082 ROP Error: 0xFFFFF9BF Lid: 26977 Lid: 21921 StoreEc: 0xFFFFF9BF Lid: 27962 ROP: ropExtendedError [250] Lid: 1494 ---- Remote Context Beg ---- Lid: 26426 ROP: ropOpenMessage [3] Lid: 23921 StoreEc: 0x3EC Lid: 21970 StoreEc: 0x8004010F PropTag: 0x65E30102 Lid: 23921 StoreEc: 0x3EC Lid: 21970 StoreEc: 0x8004010F PropTag: 0x65E20102 Lid: 23921 StoreEc: 0x3EC Lid: 21970 StoreEc: 0x8004010F PropTag: 0x65E00102 Lid: 23921 StoreEc: 0x3EC Lid: 21970 StoreEc: 0x8004010F PropTag: 0x668F0040 Lid: 21097 Lid: 39027 dwParam: 0x9E2E49 Lid: 8756 StoreEc: 0xFFFFF9BF Lid: 58765 StoreEc: 0xFFFFF9BF Lid: 4353 StoreEc: 0xFFFFF9BF Lid: 17114 Lid: 6153 StoreEc: 0xFFFFF9BF Lid: 21810 Lid: 5249 StoreEc: 0xFFFFF9BF Lid: 37123 Lid: 59651 StoreEc: 0xFFFFF9BF Lid: 1750 ---- Remote Context End ---- Lid: 27962 ROP: ropGetPropsSpecific [7] Lid: 17082 ROP Error: 0x4B9 Lid: 26465 Lid: 21921 StoreEc: 0x4B9 Lid: 27962 ROP: ropExtendedError [250] Lid: 1494 ---- Remote Context Beg ---- Lid: 26426 ROP: ropGetPropsSpecific [7] Lid: 36739 Lid: 1750 ---- Remote Context End ---- Lid: 26849 Lid: 21817 ROP Failure: 0x4B9 Lid: 20385 Lid: 28577 StoreEc: 0xFFFFF9BF Lid: 32001 Lid: 29953 StoreEc: 0xFFFFF9BF