Exchange 2019: Installation System Requirement and Prerequisite

This blog is talking about System Requirements and Prerequisites of Exchange 2019 setup. Study and prepare your Infrastructure for the Exchange 2019 Deployment.

System Requirements


  • Exchange 2010 and earlier versions are not supported.
  • Exchange 2013    Supported with Cumulative Update 21 or later, including Edge Transport servers.
  • Exchange 2016    Supported with Exchange 2016 Cumulative Update 11 or later, including Edge Transport servers.

Forest Requirement:

  • The Active Directory forest and domain functional level should be Windows Server 2012 R2 or higher.

Domain Controllers Requirement:

  • Windows Server 2019 Standard or Datacenter
  • Windows Server 2016 Standard or Datacenter
  • Windows Server 2012 R2 Standard or Datacenter

Operating System Requirement:

For Mailbox and Edge Transport server roles required Windows Server 2019 Standard or Datacenter

For Management tools we require below versions of Windows

  • Windows Server 2019 Standard or Datacenter
  • Windows 10 64-bit edition

Disk Format and Space Requirement:

  • NTFS on OS, Exchange Binary, Transport Database.
  • REFS on Mailbox Database and Transaction Logs.
  • At least 30 GB of free space on the drive where you’re installing Exchange
  • At least 200 MB of free space on the system drive
  • At least 500 MB of free space on the drive that contains the message queue database.

Paging File Requirement:

  • Set the paging file minimum and maximum value to the same size: 25% of installed memory.

Memory Requirement:

  • Mailbox Role:         Minimum 128GB (This might be a factor which will push you to stay on Exchange 2016)
  • Edge Transport Role:    Minimum 64GB
  • Exchange 2019 has large memory support (up to 256 GB).

Processor Requirement:

  • Intel 64 architecture (formerly known as Intel EM64T).
  • AMD processor that supports the AMD64 platform.
  • Intel Itanium IA64 processors are not supported.
  • Recommended supported processor sockets is up to 2 on physical machines.

Supported Clients:

  • Office 365 Proplus
  • Outlook 2019
  • Outlook 2016
  • Outlook 2013
  • Outlook for Mac for Office 365
  • Outlook 2016 for Mac
  • Outlook 2013 and 2016 on Windows 7: KB3140245 to apply registry keys to enable TLS 1.1 & 1.2 support

Net Framework Requirement:

  • It is always recommended to install latest .net Framework which is 4.7.2 at this moment. .Net Framework 4.7.2 can be downloaded from here.

Management Tools:

  • Management tools can be installed on a Windows 10 or higher client.
  • Management tools just require .Net Framework 4.7.2 which can be downloaded from here.

    Note: You have to login to your license contract to download the Exchange setup. There is no Microsoft public link available yet but there could be a non-Microsoft Public Link.


  • Open PowerShell with run as administrator and run the following command:
Install-WindowsFeature Server-Media-Foundation, NET-Framework-45-Features, RPC-over-HTTP-proxy, RSAT-Clustering, RSAT-Clustering-CmdInterface, RSAT-Clustering-Mgmt, RSAT-Clustering-PowerShell, WAS-Process-Model, Web-Asp-Net45, Web-Basic-Auth, Web-Client-Auth, Web-Digest-Auth, Web-Dir-Browsing, Web-Dyn-Compression, Web-Http-Errors, Web-Http-Logging, Web-Http-Redirect, Web-Http-Tracing, Web-ISAPI-Ext, Web-ISAPI-Filter, Web-Lgcy-Mgmt-Console, Web-Metabase, Web-Mgmt-Console, Web-Mgmt-Service, Web-Net-Ext45, Web-Request-Monitor, Web-Server, Web-Stat-Compression, Web-Static-Content, Web-Windows-Auth, Web-WMI, Windows-Identity-Foundation, RSAT-ADDS


  • This will start a command prompt and the following window. Don’t close the command prompt


        Click next then check the checkbox to agree and click Install.

  • Setup will verify the files and then install them. In few minutes you will see installation has complete.
  • Click finish and restart the server.

Exchange 2019 System Requirements and Prerequisites ends here.


Prabhat Nigam and Suresh Selvaraj

Team @ Golden Five Consulting


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