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


CTO @ Golden Five | CEO at LAExUG Foundation

Prabhat is 3 times Microsoft MVP Award winner. He is MBA in Information Technology and he is working as a CTO at Golden Five Consulting which is a Microsoft Gold Partner, MSP, T1CSP, and Education partner. He helps in designing, implementing, managing and supporting solutions for private messaging cloud, mergers, a collaboration between different messaging software and other migration & deployment projects for the following technologies Office 365, Azure, AWS, Exchange, SQL, ADFS, MFA, FIM, MIM and Directory services. He has worked for all big IT giants either as an employee or contractor where he has led the Global teams. He has started his career as Technical Consultant in Exchange 5.5 with Microsoft PSS and his exchange love never stopped & continued with 2000/2003/2007/2010/2013/2016/2019/O365. At one point in time, he was the only person to support EDS customers when Microsoft had closed all the supports for 5.5 and now for all old legacy Exchange versions.
He used to blog at, manages multiple LinkedIn and Facebook Groups. He also Owns MSExchnageGuru YouTube channel where he uploads all his records technical sessions. Don’t forget to check his PowerShell scripts which are making admins life easier. Prabhat can be reached at

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