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Outlook 2016 and 2019 can't connect with Local Install of Exchange 2016 on Windows Server 2012R2 RRS feed

  • Question

  • Just a few days ago around July 2nd or 3rd 2019 Microsoft Outlook stopped connecting to our Microsoft exchange 2016. Exchange is installed locally at one of our offices running as a virtual Windows Server 2012R2 in Microsoft Hyper-V. This was working for several years until this week. We started having connecting problems with outlook and some android phones. We have several  domains each has e-mail accounts running in Exchange 2016 as a multitenant. We have e-mail setup for each domain and we use outlook to connect to all 3 different domain e-mail accounts that are hosted on our Exchange 2016 server. Starting this last week at first it is very odd that each desktop outlook will work with one or more of the domains but not all of them and or each outlook will work differently some will connect to one account and not to others. Update with most of the desktops outlook is not connecting at all. Mobil phones are still working and will connect to all of the different domain e-mail accounts.

    Update 2019-7-6: Our Samsung tablet and Samsung phones all connect and all e-mail accounts are working on the phones. Outlook desktop version 2016 and version 2019 mostly do not work. With my desktop I have 4 accounts that use our exchange server. 1 of the 4 accounts are connecting and working 3 of the accounts are not working.


    Saturday, July 6, 2019 4:12 PM

All replies

  • Hi,

    Use the online tool https://testconnectivity.microsoft.com/

    You can test various connectivity methods here with the accounts in your exchange server. This will give you more details on what is wrong on the connectivity issues


    Regards From: Exchange Online | World of Cloud Computing

    Saturday, July 6, 2019 6:31 PM
    Moderator
  • Thank you yes this test did show some connectivity problems. I still need help to help adjust or reset specific items that only affect outlook and not https/OWA or Android. My phone and OWA work perfectly. This could also be someone wrong in DNS on the Exchange server.
    Saturday, July 6, 2019 9:35 PM
  • Please fix the DNS issues as suspected and test again

    Regards From: Exchange Online | World of Cloud Computing

    Sunday, July 7, 2019 7:12 AM
    Moderator
  • Hi,

    What's the detailed version of your Exchange server?

    Does autodiscover work well? Can you create Outlook profiles for users successfully?

    Do you get any alerts when the account cannot connect to Exchange server?

    1.  Try to create new outlook profiles for users who have the connectivity issue.

    2.  Please check the network connectivity and network load.

    3.  You can enable troubleshooting logging for Outlook to find some clues. File > Options > Advanced > Other > Check "Enable troubleshooting logging (requires restarting Outlook)", then restart Outlook:

    After the issue is reproduced, check OPMLog.log under C:\Users\username\AppData\Local\Temp\OutlookLogging. You can check this blog for more details: How To Fix Outlook Connectivity Problems

    Note: Microsoft is providing this information as a convenience to you. The sites are not controlled by Microsoft. Microsoft cannot make any representations regarding the quality, safety, or suitability of any software or information found there. Please make sure that you completely understand the risk before retrieving any suggestions from the above link.

    Regards,

    Lydia Zhou


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    Monday, July 8, 2019 8:48 AM
    Moderator
  • Hi,

    Is there any update on this thread?

    Please let us know if you would like further assistance. If you have solved your problem, could you share with us? Maybe it will help more people with similar problems. 

    Regards,

    Lydia Zhou


    Please remember to mark the replies as answers if they helped. If you have feedback for TechNet Subscriber Support, contact tnsf@microsoft.com.

    Click here to learn more. Visit the dedicated forum to share, explore and talk to experts about Microsoft Teams.

    Monday, July 15, 2019 1:59 AM
    Moderator