Microsoft Exchange Server 2019 15.2.1118.7 CU12

Exchange By Microsoft

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Microsoft Exchange Server 2019 allows you to accomplish more with wealthy Outlook experiences on phones, tablets, desktops, and the Web. Integration with Outlook, SharePoint, and OneDrive for Business helps you experience collaboration better when receiving, modifying and sharing documents without ever having to leave Outlook.

  • Security on the core.
  • Exchange 2019 runs on Windows Server 2019 Core, offering the safest and most reliable platform possible in your messaging infrastructure.
  • Improved Performance. Exchange 2019 makes use of available processor cores, memory, and storage more successfully than ever before, in addition to more intelligently managing inner system resources to help enhance end-user performance.
  • Security. Exchange Server 2019 is safer than any previous version out of the box, ensuring only the newest ciphers and hashing algorithms protect your data.
  • Simpler Administration. Exchange Server 2019 makes administration simpler for common tasks comparable to calendar and delegate management.
  • Mobile productivity. Connect, manage, and get things finished on the go. Outlook mobile is the safest and most compliant solution to access Exchange Online on your mobile device.

Microsoft Exchange Server 2019 brings a new set of technologies, features, and services to Exchange Server, the messaging platform that provides email, scheduling, and tools for customized collaboration and messaging service programs. It aims to support people and organizations as their work habits evolve from a communication focus to a collaboration focus.

At the same time, Exchange 2019 helps decrease the total price of possession whether or not you deploy Exchange 2019 on-premises or provision your mailboxes within the cloud.

Exchange Server makes use of a single building block architecture that provides email services for deployments of all sizes, from small organizations to the biggest multi-national companies.

Best Features of Microsoft Exchange Server 2019 :

  • Service Monitoring
  • E-Mail Queue Monitoring
  • Client Access Connectivity (ActiveSync, OWA, POP, IMAP, etc.)
  • E-Mail flow Monitoring
  • Real-Time Change Auditing
  • Unauthorized Mailbox Logins
  • Mailbox Permission Changes
  • Mailbox Size Reports
  • Office 365 Reports
  • E-Mail Traffic Reports

Server communication architecture

Communication between Exchange servers and past and future versions of Exchange happens on the protocol layer. Cross-layer communication isn’t allowed. This communication architecture is summarized as “every server is an island”. This architecture has the following advantages:

  • Reduced inter-server communications.
  • Version-aware communications.
  • Isolated failures.
  • Integrated design inside every server.

Changes in Cumulative Update 9 for Exchange Server 2019

What’s new when upgrading from Exchange Server 2016 to 2019 :


  • Windows Server Core support: Running Exchange on a Windows deployment with much less surface area means much less attack surface area and fewer components to service.
  • Block external access to the Exchange admin center (EAC) and the Exchange Management Shell: You can use Client Access Rules to only allow administration of Exchange from the inner network as an alternative to using advanced network and firewall rules.
  • TLS 1.2 is the only version that’s enabled by default: Exchange Server 2019 includes necessary modifications to enhance the security of client and server connections. The default configuration for encryption will allow TLS 1.2 only and disable support for older algorithms (particularly, DES, 3DES, RC2, RC4, and MD5). It can even configure elliptic curve key exchange algorithms with priority over non-elliptic curve algorithms. In Exchange Server 2016 and later, all cryptography settings are inherited from the configuration specified within the operating system. For further information, see Exchange Server TLS Guidance.


  • Improved search infrastructure: The completely rebuilt search infrastructure for cloud scale and reliability in Exchange Online is now available in Exchange 2019. This new search infrastructure allows for the indexing of larger files, easier management, and higher search performance.
  • Faster, more reliable failovers: The modifications to the search architecture lead to significantly quicker and more reliable failovers between servers.
  • Metacache database: Improvements on the core of Exchange’s database engine allow better overall performance and make the most of the newest storage hardware, together with larger disks and SSDs.
  • Modern hardware support: Exchange now supports as much as 256 GB of memory and 48 CPU cores.
  • Dynamic database cache: The information store process employs dynamic memory cache allocation optimizing memory usage to active database usage.


  • Calendar – Do Not Forward: This is just like Information Rights Management (IRM) for calendar items without the IRM deployment requirements. Attendees can’t forward the invitation to other people, and only the organizer can invite extra attendees.
  • Calendar – Better Out of Office: Additional options whenever you won’t be within the office. Key options include: add an event to your calendar that shows you as Away/Out of Office, and a fast option to cancel/decline conferences that may occur while you’re away.
  • Calendar – Remove-CalendarEvents cmdlet: Enables administrators to cancel conferences that had been organized by a user that has left the company. Previously, conference rooms or assembly attendees would have these defunct conferences permanently on their calendars.
  • Assign delegate permission through PowerShell: Updates to the Add-FolderPermissions cmdlet so administrators can assign delegate permissions.
  • Email address internationalization (EAI): Email addresses that contain non-English characters can now be routed and delivered natively.

Discontinued features from Exchange 2016 to Exchange 2019

  • Unified Messaging (UM). Unified Messaging has been removed from Exchange 2019. We recommend that Exchange 2019 organizations transition to Skype for Business Cloud Voice Mail.

Discontinued features from Exchange 2013 to Exchange 2019 :

  • Unified Messaging (UM). Unified Messaging has been removed from Exchange 2019. We recommend that Exchange 2019 organizations transition to Skype for Business Cloud Voice Mail.
  • Client Access server role. The Client Access server role has been changed by Client Access services that run on the Mailbox server role. The Mailbox server role now performs all performance that was beforehand included with the Client Access server role. For more information about the new Mailbox server role, see Exchange Server architecture.
  • MAPI/CDO library. The MAPI/CDO library has been changed by Exchange Web Services (EWS), Exchange ActiveSync (EAS), and Representational State Transfer (REST) APIs. If a software makes use of the MAPI/CDO library, it wants to move to EWS, EAS, or the REST APIs to communicate with Exchange 2019.

De-emphasized features in Exchange 2019 :

  • Third-party replication APIs
  • RPC over HTTP
  • Database availability group (DAG) support for failover cluster administrative access points

Supported operating systems for Exchange 2019 :

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

Supported clients (with newest updates) in Exchange 2019 :

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

Size: 5.84 GB

DOWNLOAD Exchange Server 2019 x64 with CU12 [ISO]

DOWNLOAD Cumulative Update 20 for Exchange Server 2016

DOWNLOAD Cumulative Update 19 for Exchange Server 2016

DOWNLOAD Cumulative Update 18 for Exchange Server 2016

DOWNLOAD Cumulative Update 14 for Exchange Server 2016

Exchange Server Build Numbers and Release Dates

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