Migrating users from Exchange 2010 to 2013 - Outlook won't connect!


  • We've just installed Exchange 2013 CU1 into our organisation running alongside Exchange 2010 SP3/Lync 2013.  We have swapped over client access, all 2010 users are now accessing OWA/Active Sync/EWS/UM etc through Exchange 2013 CAS

    All this works fine.

    However, if we migrate a user from 2010 to 2013, OWA works fine, but Outlook 2010 or 2013 cannot connect to the mailbox.  When setting up a profile outlook finds what appears to be the correct information but then when outlook starts we get the generic "Cannot open your default email folders" type error.

    If we create a new user account, either directly on Exchange 2013 or on exchange 2010->migrated to 2013 Outlook connectivity is fine.

    It seems to be something about migrating old accounts rather than the configuration of Outlook Anywhere.

    The problem persists even if we delete roaming/local profiles.

    Any help would be greatly appreciated!  Thanks

    • Edited by DJL Friday, May 03, 2013 3:22 PM
    Friday, May 03, 2013 3:21 PM


  • Solution found.

    Outlook Anywhere had been disabled for most of our users.  Of course in Exchange 2013 RPC over HTTP is the only method for Outlook to connect!

    A simple

    Get-Mailbox -Identity XXX | Set-CASMailbox -MAPIBlockOutlookRpcHttp:$false

    solved the problem

    • Edited by DJL Friday, May 03, 2013 4:13 PM
    • Marked as answer by DJL Friday, May 03, 2013 4:13 PM
    Friday, May 03, 2013 4:13 PM