MailBox Move Error With Exchange 2010 sp3

Question

I initiated a mailbox move for a specific mailbox and let it run all night. The next day, the user stated he cannot log into is mailbox and the error stated "mailbox is moving, check back later".
Exchange stated the status of the move is "CompletedWithError". I noticed that the mailbox is still in the old database.
I tried to remove the move request and received an error "couldn't find a move request that corresponds to this identity".
I rebooted the exchange server.
Exchange still shows the user in the old database
There is no move requests in exchange
The user is still experiencing the same error "You weren't able ti sign in because the mailbox is being move"
I tried to initiated another move and received:
Summary: 1 item(s). 0 succeeded, 1 failed.
Elapsed time: 00:00:00
John, Doe
Failed
Error:
Couldn't switch the mailbox into Sync Source mode.
This could be because of one of the following reasons:
  Another administrator is currently moving the mailbox.
  The mailbox is locked.
  The Microsoft Exchange Mailbox Replication service (MRS) doesn't have the correct permissions.
  Network errors are preventing MRS from cleanly closing its session with the Mailbox server. If this is the case, MRS may continue to encounter this error for up to 2 hours - this duration is controlled by the TCP KeepAlive settings on the Mailbox server.
Wait for the mailbox to be released before attempting to move this mailbox again.
MapiExceptionMailboxInTransit: Unable to open message store. (hr=0x80004005, ec=1292)
Diagnostic context:
    Lid: 55847   EMSMDBPOOL.EcPoolSessionDoRpc called [length=163]
    Lid: 43559   EMSMDBPOOL.EcPoolSessionDoRpc returned [ec=0x0][length=264][latency=0]
    Lid: 23226   --- ROP Parse Start ---
    Lid: 27962   ROP: ropLogon [254]
    Lid: 17082   ROP Error: 0x50C     
    Lid: 26937  
    Lid: 21921   StoreEc: 0x50C     
    Lid: 27962   ROP: ropExtendedError [250]
    Lid: 1494    ---- Remote Context Beg ----
    Lid: 26426   ROP: ropLogon [254]
    Lid: 22787   Error: 0x0
    Lid: 13032   StoreEc: 0x8004010F
    Lid: 25848  
    Lid: 7588    StoreEc: 0x8004010F
    Lid: 25840  
    Lid: 6564    StoreEc: 0x8004010F
    Lid: 50999  
    Lid: 2567    StoreEc: 0x50C     
    Lid: 19452  
    Lid: 2199    StoreEc: 0x50C     
    Lid: 56415  
    Lid: 48223   StoreEc: 0x50C     
    Lid: 17097   StoreEc: 0x50C     
    Lid: 8620    StoreEc: 0x50C     
    Lid: 1750    ---- Remote Context End ----
    Lid: 26849  
    Lid: 21817   ROP Failure: 0x50C     
    Lid: 26297  
    Lid: 16585   StoreEc: 0x50C     
    Lid: 32441  
    Lid: 1706    StoreEc: 0x50C     
    Lid: 24761  
    Lid: 20665   StoreEc: 0x50C     
    Lid: 25785  
    Lid: 29881   StoreEc: 0x50C     
Click here for help... http://technet.microsoft.com/en-US/library/ms.exch.err.default(EXCHG.140).aspx?v=14.3.224.2&t=exchgf1&e=ms.exch.err.Ex7E66C2
Exchange Management Shell command attempted:
'ab.ad/CD/Users/doe, john' | New-MoveRequest -TargetDatabase 'Carlsbad_Mailbox'
Elapsed Time: 00:00:00
At this point, when trying to access the mailbox, exchange states its being moved... when trying to remove the move... Exchange does not see the move.
any help is appreciated,

Answer 1

Hi Cudflyn,
Base on my search, you can try to increase the TCP Keep Alive Time for the servers involved in the move.You can refer to the following
article to increase it:
Mailbox Move Error - 'Couldn't switch the mailbox into Sync Source mode'
Note: Just REMEMBER to DELETE the registry entry when the mailbox moves are compete!
Best regards,
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