Hi
When i try to migrate mailboxes from on-premises to O365 getting this error and status shows like Syncing.
Error: MigrationTransientException: Failed to communicate with the mailbox database. --> Failed to communicate with the mailbox database. --> MapiExceptionMdbOffline: Unable to open message store. (hr=0x80004005, ec=1142) Diagnostic context: Lid: 55847 EMSMDBPOOL.EcPoolSessionDoRpc called [length=132] Lid: 43559 EMSMDBPOOL.EcPoolSessionDoRpc returned [ec=0x476][length=186][latency=0] Lid: 32881 StoreEc: 0x476 Lid: 50035 Lid: 64625 StoreEc: 0x476 Lid: 52176 ClientVersion: 15.1.599.20 Lid: 50032 ServerVersion: 15.1.639.6005 Lid: 50128 Lid: 1494 ---- Remote Context Beg ---- Lid: 46904 StoreEc: 0x476 Lid: 63456 dwParam: 0x81E0 Lid: 56872 dwParam: 0xFE Lid: 42712 StoreEc: 0x476 Lid: 35992 StoreEc: 0x476 Lid: 50784 Lid: 1750 ---- Remote Context End ---- Lid: 1494 ---- Remote Context Beg ---- Lid: 46904 StoreEc: 0x476 Lid: 63456 dwParam: 0x81E0 Lid: 56872 dwParam: 0xFE Lid: 42712 StoreEc: 0x476 Lid: 35992 StoreEc: 0x476 Lid: 50784 Lid: 1750 ---- Remote Context End ---- Lid: 50288 Lid: 23354 StoreEc: 0x476 Lid: 35180 Lid: 25913 Lid: 21817 ROP Failure: 0x476 Lid: 26297 Lid: 16585 StoreEc: 0x476 Lid: 32441 Lid: 1706 StoreEc: 0x476 Lid: 24761 Lid: 20665 StoreEc: 0x476 Lid: 25785 Lid: 29881 StoreEc: 0x476
Need help.