Minimum System Requirements and Forest Functional Level for Exchange Server 2016

Just one block – One Role

Exchange 2016 Prerequisites – 

Supported Forest Functional Level for Exchange Server 2016 –

  • Active Directory must be at Windows Server 2008 forest functionality mode or higher.

Minimum Operation System Requirements-

  • Windows Server 2016 Standard or Datacenter
  • Windows Server 2012 R2 Standard or Datacenter
  • Windows Server 2012 Standard or Datacenter

Minimum Memory Requirement (RAM) –

  • Mailbox Server 8GB minimum
  • Edge Transport Server 4GB minimum

NOTE — Client Access Role is removed in Exchange Server 2016

Minimum Client Requirements –

  • Outlook 2016
  • Outlook 2013
  • Outlook 2010 SP1 with KB2965295
  • Outlook for Mac 2011
  • Outlook for Mac for Office 365

Minimum Requirement for Exchange 2016 Coexistence –

  • Removing Exchange 2007 Completely From the Environment.
  • Exchange 2010 Sp3 with Updated Rollup 9 – Including Edge Transport Servers.
  • Exchange 2013 Sp1 with Cumulative Update 8 – Including Edge Transport Servers

Fulfilling the above requirement – Exchange 2016 can coexist

Virtualization Support –

  • Deployment on Microsoft Azure virtual machines is supported (All Storage volumes for Exchange databases/transaction logs/transport databases should use Azure Premium Storage.)
  • Any Version of Hyper-V
  • VMware vSphere 5.0 Update 2 or Higher
  • To see other Supported Virtualization Products

Not Supported Scenarios –

1. Coexistence with Exchange 2007

2 .Outlook 2003/Outlook 2007 Clients are not Supported

3. Changing the Role of Window Server 2012/2012 R2 from a member server to a directory server, or vice versa, Where Exchange 2016 is already installed

4. Exchange Server 2016 running in Windows Server Core mode is not supported


Useful links –

To Test in Non-Production Environments –

Download Microsoft Exchange Server 2016
Installing Exchange 2016 on Windows Server 2012 R2

About Satheshwaran Manoharan

Satheshwaran Manoharan is an Microsoft Office Server and Services MVP , Publisher of Specialized in Office365 / Microsoft Exchange / Virtualization , Sathesh is an Messaging Expert supporting/Designing/Deploying many medium size businesses to large enterprises when it comes to Corporate messaging and Virtualization Infrastructure

Check Also

az Git Terraform configs to work behind Proxy

Let’s see how to configure proxy for az Git and Terraform behind an authenticated proxy …


  1. can you see any reasons why microsft Exchange team do not support windows mode core ?
    as EMC does not exist anymore in ex2013 and 2016. the only thing needeed is http EAC…available by dns resolution everywhere (internally) in your organisation.

  2. Hello and Greetings,
    Does domain controller 2016 with domain and forest functional level 2008 R2 support exchange 2007 SP3?


Leave a Reply

Your email address will not be published.