Outlook 2016 slow sync
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Thread: Outlook 2016 slow sync

  1. #1
    Active Member ZeXtras Reseller
    Join Date
    Nov 2012

    Outlook 2016 slow sync


    I'm using latest ZeXtras with Outlook 2016 and Zimbra 8.7.

    ActiveSync runs correctly, but synchronization is very slow.

    My account has 6 Gb of datas and many folders.

    With Zimbra Outlook Connector (Network edition), synchronization takes about 4 - 6 hours.

    With ZeXtras and ActiveSync, not all the emails are synced after 2 days. Outlook is configured to send/receive each 10 minutes.

    How can I speed up this ?



  2. #2
    Junior Member
    Join Date
    Feb 2017

    Same issue form using Zextras and ActiveSync. my account has 2.2 Gb of datas and many folders.
    The sync is running since 12 hours and still not finish.

    Is it a normal behavior ?

  3. #3
    ZeXtras Community Manager ZeXtras Employee Cine's Avatar
    Join Date
    Apr 2011

    Unfortunately Microsoft Outlook is known to suffer from very slow first syncs, due to the way it implements the Exchange ActiveSync protocol, especially when a lot of folders are involved.

    If you feel like the synchronization might be stuck, check the sync.log or add a "debug" level Account Logger to the mailbox to check the synchronization's status.

    Have a nice day,
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