Second Exchange Mailbox Random Disconnects In Outlook 2010

We have our users temporarily using two exchange mailboxes in Outlook 2010.  The primary account is fine (exchange is local) but the second account we recently adds seems to randomly disconnect and not automatically reconnect.  The fix at the moment
is to reboot the computer and everything works fine but this is obviously annoying to the users.
Anyone else run into this issue or have a suggestion?
Thanks in advance.

Hi,
I recommend using separate profiles for each account if they are using a same one.
When the second mailbox cannot connect to Exchange server, it will leave some information/warning/error in the App log. Please post the details if there is any related content.
Thanks
Mavis
Mavis Huang
TechNet Community Support

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    RopHandler: OpenFolder: [StoragePermanentException] There was an error parsing the entry ID. -> [MapiExceptionInvalidParameter] Unable to obtain the FID and MID from the entry id. (hr=0x80070057, ec=0) 
    ClientRPCCount=42;AvgClientLatency=00:00:00.0022142;ServerRPCCount=8;AvgCasRPCProcessingTime=00:00:00.0057500;AvgMbxProcessingTime=00:00:00;MaxCasRPCProcessingTime=00:00:00.0460000;20%ClientPercentile=10;40%ClientPercentile=10;60%ClientPercentile=10;80%ClientPercentile=10;90%ClientPercentile=10;95%ClientPercentile=20;99%ClientPercentile=20;100%ClientPercentile=50;20%CasPercentile=10;40%CasPercentile=10;60%CasPercentile=10;80%CasPercentile=10;90%CasPercentile=10;95%CasPercentile=10;99%CasPercentile=10;100%CasPercentile=50;20%MbxPercentile=10;40%MbxPercentile=10;60%MbxPercentile=10;80%MbxPercentile=10;90%MbxPercentile=10;95%MbxPercentile=10;99%MbxPercentile=10;100%MbxPercentile=10;ClientRpcFailureData:
    RpcEndPoint: [ServerUnavailableException] Connection must be re-established -> [SessionDeadException] Connection is severed (ConnectionFailedTransientException). Client needs to reconnect. -> [ConnectionFailedTransientException] Cannot get row count.
    -> [MapiExceptionNetworkError] Unable to get table row count. (hr=0x80040115, ec=0) 
    RopHandler: Logon: [RopExecutionException] Mailbox is temporarily unavailable. Error code = MdbOffline (0x00000476) -> [MailboxOfflineException] Cannot open mailbox /o=CORP/ou=Office/cn=Recipients/cn=Banger. -> [MapiExceptionMdbOffline] Unable to make
    connection to the server. (hr=0x80004005, ec=1142) 
    RpcEndPoint: [ServerUnavailableException] Connection must be re-established -> [SessionDeadException] The primary owner logon has failed. Dropping a connection. -> [RopExecutionException] Mailbox is temporarily unavailable. Error code = MdbOffline
    (0x00000476) -> [MailboxOfflineException] Cannot open mailbox /o=CORP/ou=Office/cn=Recipients/cn=Banger. -> [MapiExceptionMdbOffline] Unable to make connection to the server. (hr=0x80004005, ec=1142) 
    Any help would be greatly appreciated

    After reviewing the entire RCP Client log on the server, I am ruling out the client PC at this moment.
    The disconnect seems to be getting triggered by a Healthmailbox  check that starts right before users gets disconnected.
    Here is a similar problem with exchange 2010 with no answer.
    http://serverfault.com/questions/474123/one-email-user-keeps-disconnecting-from-our-exchange-server
    Healthmailbox associated with user's mailbox database  preforms the following operations at 19:00:05.899Z
    Connect
    OwnerLogon
    OwnerLogoff
    Disconnect
    a minute later, at 19:01:43.526Z Healthmailbox associated with  initial mailbox database  preforms the following operations
    Connect
    ArchiveLogon
    ArchiveLogoff
    Disconnect
    and then at 19:01:46.479Z server logs RopHandler: OpenFolder: [StoragePermanentException] There was an error parsing the entry ID. -> [MapiExceptionInvalidParameter] Unable to obtain the FID and MID from the entry id. (hr=0x80070057, ec=0) for the
    client connection and client notices the disconnect.

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