Supported coexistence scenarios with Microsoft Exchange server 2019

If your organization is already running an Exchange Server version, you should verify requirements for coexistence with Exchange server 2019 while planning your upgrade to exchange server 2019.

The supported coexistence scenarios between Exchange 2019 and its predecessor’s described in table below.

Exchange versionExchange 2019 Organization coexistence
Exchange 2010 and earlier versionsNot supported
Exchange 2013Supported with Exchange 2013 Cumulative Update 21 (CU21) or later
Exchange 2016Supported with Exchange 2016 CU11 or later
Mixed Exchange 2013 and Exchange 2016 organizationSupported if all Exchange 2013 and Exchange 2016 servers in the organization meet the requirements as mentioned above.

Supported clients for Exchange Server 2019 include:

  • Outlook 2019
  • Outlook 2016
  • Outlook 2016 for Mac
  • Outlook 2013
  • Outlook for Mac for Office 365

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