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Cyrille_D's avatar
Cyrille_D
Copper Contributor
Nov 03, 2020

Calendar sync issue with new 2020 Update

Hi,

 

We are running Exchange 2016 on-premise and we have an issue since the last 2020 update with the calendar for the device account. Everything was working fine before the update.

 

If I try to reconfigure the device account like I was doing before, I receive the following error :

 

 

Does anyone have an idea where I can check (event viewer,...) to troubleshoot this issue?

 

Best regards,

 

Cyrille

2 Replies

  • imatt2009's avatar
    imatt2009
    Copper Contributor
    Nov 23, 2020

    Cyrille_D We are having the same issue with our Surface Hub 2S devices and on-prem Exchange 2013.  They were working fine up until this update, then the calendars stopped syncing.  I have a case open with Microsoft, but it's a slow process at this time.

     

    It's looking more and more like Win 10 Team Edition 2020 does not work with basic authentication used by on-prem Exchange--and even worse--won't work with basic authentication managed through intune.

     

    We're in a hybrid Exchange mode right now, as we are preparing to migrate to Exchange Online.  One of our test Surface Hub 2S units with Win10 Team 2020 works great with Exchange Online--after we re-provisioned as a 100% cloud device.  This was a "scorched earth" approach....and not our top choice for migration.....

    • Thomas_Forsmark's avatar
      Thomas_Forsmark
      Copper Contributor
      Apr 28, 2021
      MS has documented it here:
      https://docs.microsoft.com/en-us/surface-hub/surface-hub-2020-team-update-known-issues

      Calendar sync of hybrid device accounts with on-premises mailboxes fails. Surface Hub devices default to using Modern Authentication for accounts that exist in Azure AD, even if they have on-premises mailboxes that do not work with this feature. In this scenario, Exchange stops syncing meetings to the device. As a result, the device does not receive or display new meetings. After KB4598291 (or a subsequent Windows CU) is installed, the SurfaceHub CSP has a new ExchangeModernAuthEnabled parameter available to toggle the use of Modern Authentication. This can be set to false via MDM policy or provisioning package to prevent the Hub from using Modern Authentication.